Secure Firewall ASA and FTD
CVE-2026-20022: A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software co…
A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition when OSPF canonicalization debug is enabled by using the command debug ip ospf canon.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityMEDIUMCVSS 3.1 6.1
EPSS0.20%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 9.12 | 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 9.16 | 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 9.17 | 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 9.18 | 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 9.19 | 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 9.20 | 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 9.20 | 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 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 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 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 Adaptive Security Appliance (ASA) Software 9.22 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.23 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.23 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.23 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.23 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.23 | See the advisory |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.23 | 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 7.0 | 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 7.2 | 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 7.4 | 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 |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.6 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.7 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.7 | See the advisory |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.7 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition when OSPF canonicalization debug is enabled by using the command debug ip ospf canon. This vulnerability is due to insufficient input validation when processing OSPF LSU packets. An attacker could exploit this vulnerability by sending crafted unauthenticated OSPF packets. A successful exploit could allow the attacker to write to memory outside of the packet data, causing the device to reload, resulting in a DoS condition.
Exploitation
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.