Secure Endpoint and ClamAV
CVE-2026-20244: ClamAV DMG File Processing Denial of Service Vulnerability
A vulnerability in the DMG file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption 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 DMG file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device.
This vulnerability is due to improper boundary checks for content in DMG files during scanning, which may result in an integer overflow on 32-bit platforms only. An attacker could exploit this vulnerability by submitting a crafted file that contains DMG content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, 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.