Secure Firewall ASA and FTD
CVE-2025-20333: Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow
A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code on an affected device.
Published
ExploitedYes, in CISA KEVAdded 25 Sept 2025
Ransomware useNot reportedPer CISA
SeverityCRITICALCVSS 3.1 9.9
EPSS71%Chance of exploitation in 30 days
Public exploitNot tracked
FixNot yet
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.20 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.20 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.20 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.20 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.20 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.20 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.20 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.20 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.22 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.22 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.1 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.1 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.1 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.1 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.3 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.3 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.3 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.3 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.4 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.6 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker with valid VPN user credentials could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of the affected device.
Exploitation
The Cisco Product Security Incident Response Team (PSIRT) is aware of attempted exploitation of this vulnerability. Cisco continues to strongly recommend that customers upgrade to a fixed software release to remediate this vulnerability.
CISA lists this CVE as exploited in the wild since 25 Sept 2025.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.