Secure Endpoint and ClamAV
CVE-2026-20216: ClamAV InstallShield File Format Processing Resource Exhaustion Vulnerability
A vulnerability in the InstallShield file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityHIGHCVSS 3.1 7.5
EPSS0.57%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 Endpoint 7.0 | See the advisory |
| Cisco Secure Endpoint 6.2 | See the advisory |
| Cisco Secure Endpoint 7.3 | See the advisory |
| Cisco Secure Endpoint 7.2 | See the advisory |
| Cisco Secure Endpoint 6.1 | See the advisory |
| Cisco Secure Endpoint 6.3 | See the advisory |
| Cisco Secure Endpoint 6.2 | See the advisory |
| Cisco Secure Endpoint 7.3 | See the advisory |
| Cisco Secure Endpoint 6.2 | See the advisory |
| Cisco Secure Endpoint 7.2 | See the advisory |
| Cisco Secure Endpoint 7.1 | See the advisory |
| Cisco Secure Endpoint 6.3 | See the advisory |
| Cisco Secure Endpoint 6.2 | See the advisory |
| Cisco Secure Endpoint 7.3 | See the advisory |
| Cisco Secure Endpoint 6.1 | See the advisory |
| Cisco Secure Endpoint 7.2 | See the advisory |
| Cisco Secure Endpoint 7.2 | See the advisory |
| Cisco Secure Endpoint 7.1 | See the advisory |
| Cisco Secure Endpoint 6.3 | See the advisory |
| Cisco Secure Endpoint 7.3 | See the advisory |
| Cisco Secure Endpoint 6.2 | See the advisory |
| Cisco Secure Endpoint 6.1 | See the advisory |
| Cisco Secure Endpoint 6.0 | See the advisory |
| Cisco Secure Endpoint 7.2 | See the advisory |
| Cisco Secure Endpoint 6.0 | See the advisory |
| Cisco Secure Endpoint 6.3 | See the advisory |
| Cisco Secure Endpoint 1.12 | See the advisory |
| Cisco Secure Endpoint 1.8 | See the advisory |
| Cisco Secure Endpoint 1.11 | See the advisory |
| Cisco Secure Endpoint 1.12 | See the advisory |
| Cisco Secure Endpoint 1.10 | See the advisory |
| Cisco Secure Endpoint 1.12 | See the advisory |
| Cisco Secure Endpoint 1.8 | See the advisory |
| Cisco Secure Endpoint 1.10 | See the advisory |
| Cisco Secure Endpoint 1.12 | See the advisory |
| Cisco Secure Endpoint 1.12 | See the advisory |
| Cisco Secure Endpoint 1.14 | See the advisory |
| Cisco Secure Endpoint 1.10 | See the advisory |
| Cisco Secure Endpoint 1.12 | See the advisory |
| Cisco Secure Endpoint 1.12 | See the advisory |
| Cisco Secure Endpoint 1.6 | See the advisory |
| Cisco Secure Endpoint 1.9 | See the advisory |
| Cisco Secure Endpoint 1.11 | See the advisory |
| Cisco Secure Endpoint 1.7 | See the advisory |
| Cisco Secure Endpoint 1.13 | See the advisory |
| Cisco Secure Endpoint 1.8 | See the advisory |
| Cisco Secure Endpoint 1.13 | See the advisory |
| Cisco Secure Endpoint 1.9 | See the advisory |
| Cisco Secure Endpoint 1.12 | See the advisory |
| Cisco Secure Endpoint 1.13 | See the advisory |
| Cisco Secure Endpoint 8.1 | See the advisory |
| Cisco Secure Endpoint 8.1 | See the advisory |
| Cisco Secure Endpoint 8.1 | See the advisory |
| Cisco Secure Endpoint 8.1 | See the advisory |
| Cisco Secure Endpoint 8.1 | See the advisory |
| Cisco Secure Endpoint 8.1 | See the advisory |
| Cisco Secure Endpoint 8.1 | See the advisory |
| Cisco Secure Endpoint 1.14 | See the advisory |
| Cisco Secure Endpoint 1.15 | See the advisory |
| Cisco Secure Endpoint 1.15 | See the advisory |
| Cisco Secure Endpoint 1.15 | See the advisory |
| Cisco Secure Endpoint 1.15 | See the advisory |
| Cisco Secure Endpoint 1.15 | See the advisory |
| Cisco Secure Endpoint 1.15 | See the advisory |
| Cisco Secure Endpoint 1.16 | See the advisory |
| Cisco Secure Endpoint 1.16 | See the advisory |
| Cisco Secure Endpoint 1.16 | See the advisory |
| Cisco Secure Endpoint 1.16 | See the advisory |
| Cisco Secure Endpoint 1.18 | See the advisory |
| Cisco Secure Endpoint 1.18 | See the advisory |
| Cisco Secure Endpoint 1.20 | See the advisory |
| Cisco Secure Endpoint 1.21 | See the advisory |
| Cisco Secure Endpoint 1.21 | See the advisory |
| Cisco Secure Endpoint 1.21 | See the advisory |
| Cisco Secure Endpoint 1.21 | See the advisory |
| Cisco Secure Endpoint 1.22 | See the advisory |
| Cisco Secure Endpoint 1.22 | See the advisory |
| Cisco Secure Endpoint 1.22 | See the advisory |
| Cisco Secure Endpoint 1.22 | See the advisory |
| Cisco Secure Endpoint 1.22 | See the advisory |
| Cisco Secure Endpoint 1.24 | See the advisory |
| Cisco Secure Endpoint 1.24 | See the advisory |
| Cisco Secure Endpoint 1.24 | See the advisory |
| Cisco Secure Endpoint 1.24 | See the advisory |
| Cisco Secure Endpoint 1.24 | See the advisory |
| Cisco Secure Endpoint 1.26 | See the advisory |
| Cisco Secure Endpoint 1.24 | See the advisory |
| Cisco Secure Endpoint 1.26 | See the advisory |
| Cisco Secure Endpoint 1.27 | See the advisory |
| Cisco Secure Endpoint 1.15 | See the advisory |
| Cisco Secure Endpoint 1.17 | See the advisory |
| Cisco Secure Endpoint 1.17 | See the advisory |
| Cisco Secure Endpoint 1.17 | See the advisory |
| Cisco Secure Endpoint 1.19 | See the advisory |
| Cisco Secure Endpoint 1.20 | See the advisory |
| Cisco Secure Endpoint 1.20 | See the advisory |
| Cisco Secure Endpoint 1.20 | See the advisory |
| Cisco Secure Endpoint 1.20 | See the advisory |
| Cisco Secure Endpoint 1.20 | See the advisory |
| Cisco Secure Endpoint 1.20 | See the advisory |
| Cisco Secure Endpoint 1.23 | See the advisory |
| Cisco Secure Endpoint 1.23 | See the advisory |
| Cisco Secure Endpoint 1.20 | See the advisory |
| Cisco Secure Endpoint 1.20 | See the advisory |
| Cisco Secure Endpoint 1.25 | See the advisory |
| Cisco Secure Endpoint 1.25 | See the advisory |
| Cisco Secure Endpoint 1.25 | See the advisory |
| Cisco Secure Endpoint 1.27 | See the advisory |
| Cisco Secure Endpoint 1.27 | See the advisory |
| Cisco Secure Endpoint 7.3 | See the advisory |
| Cisco Secure Endpoint 7.3 | See the advisory |
| Cisco Secure Endpoint 7.4 | See the advisory |
| Cisco Secure Endpoint 7.4 | See the advisory |
| Cisco Secure Endpoint 7.4 | See the advisory |
| Cisco Secure Endpoint 7.4 | See the advisory |
| Cisco Secure Endpoint 7.4 | See the advisory |
| Cisco Secure Endpoint 7.4 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 8.0 | See the advisory |
| Cisco Secure Endpoint 8.0 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 8.1 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 8.2 | See the advisory |
| Cisco Secure Endpoint 8.2 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 8.2 | See the advisory |
| Cisco Secure Endpoint 8.2 | See the advisory |
| Cisco Secure Endpoint 8.4 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 8.4 | See the advisory |
| Cisco Secure Endpoint 8.4 | See the advisory |
| Cisco Secure Endpoint 8.4 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 8.4 | See the advisory |
| Cisco Secure Endpoint 8.4 | See the advisory |
| Cisco Secure Endpoint 8.4 | See the advisory |
| Cisco Secure Endpoint 7.5 | See the advisory |
| Cisco Secure Endpoint 8.4 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
A vulnerability in the InstallShield file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.
This vulnerability is due to improper handling of temporary resources during file scanning. An attacker could exploit this vulnerability by submitting a crafted InstallShield file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process and temporarily consume available system resources, resulting in a DoS condition on the affected software.
Exploitation
The Cisco 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.