ClamAV PESpin File Format Processing Integer Overflow Vulnerability
Priority MEDIUM 40CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.
Summary
A vulnerability in the PESpin file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruption on an affected device. This vulnerability is due to improper boundary checks for content in PESpin files during scanning, which may result in an integer overflow. An attacker could exploit this vulnerability by submitting a crafted file that contains PESpin 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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00559 46th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Secure Endpoint | 7.0.5; 6.2.19; 7.3.3; 7.2.13; 6.1.5; 6.3.1; 6.2.5; 7.3.5; 6.2.1; 7.2.7; 7.1.1; 6.3.5; 6.2.9; 7.3.1; 6.1.7; 7.2.11; 7.2.3; 7.1.5; 6.3.3; 7.3.9; 6.2.3; 6.1.9; 6.0.9; 7.2.5; 6.0.7; 6.3.7; 1.12.3; 1.8.0; 1.11.1; 1.12.4; 1.10.0; 1.12.0; 1.8.1; 1.10.1; 1.12.1; 1.12.6; 1.14.0; 1.10.2; 1.12.7; 1.12.2; 1.6.0; 1.9.0; 1.11.0; 1.7.0; 1.13.0; 1.8.4; 1.13.1; 1.9.1; 1.12.5; 1.13.2; 8.1.7.21512; 8.1.7; 8.1.5; 8.1.3.21242; 8.1.3; 8.1.5.21322; 8.1.7.21417; 1.14.1; 1.15.1; 1.15.2; 1.15.3; 1.15.4; 1.15.5; 1.15.6; 1.16.0; 1.16.1; 1.16.2; 1.16.3; 1.18.0; 1.18.1; 1.20.0; 1.21.0; 1.21.1; 1.21.2; 1.21.3; 1.22.0; 1.22.1; 1.22.2; 1.22.3; 1.22.4; 1.24.0; 1.24.1; 1.24.2; 1.24.3; 1.24.4; 1.26.0; 1.24.5; 1.26.1; 1.27.0; 1.15.0; 1.17.0; 1.17.1; 1.17.2; 1.19.0; 1.20.1; 1.20.2; 1.20.3; 1.20.4; 1.20.5; 1.20.6; 1.23.0; 1.23.1; 1.20.7; 1.20.8; 1.25.0; 1.25.1; 1.25.2; 1.27.1; 1.27.2; 7.3.13; 7.3.15; 7.4.1; 7.4.1.20425; 7.4.1.20439; 7.4.3; 7.4.3.20679; 7.4.5; 7.5.1.20813; 7.5.1.20833; 7.5.3; 7.5.5; 8.0.1.21160; 8.0.1.21164; 7.5.7; 7.5.9; 7.5.11; 8.1.7.21585; 7.5.13.21586; 7.5.13.21598; 8.2.1.21612; 8.2.1.21650; 7.5.15.21611; 7.5.17.21680; 8.2.3.30119; 8.2.4.30130; 8.4.0; 7.5.19; 8.4.1.30298; 8.4.2.30317; 8.4.1.30307; 7.5.20; 8.4.3; 8.4.4.30419; 8.4.4.30467; 7.5.21.21732; 8.4.5.30483 | — | No fix listed | CNA |
- Cisco Secure Endpoint VendorCisco Affected 7.0.5; 6.2.19; 7.3.3; 7.2.13; 6.1.5; 6.3.1; 6.2.5; 7.3.5; 6.2.1; 7.2.7; 7.1.1; 6.3.5; 6.2.9; 7.3.1; 6.1.7; 7.2.11; 7.2.3; 7.1.5; 6.3.3; 7.3.9; 6.2.3; 6.1.9; 6.0.9; 7.2.5; 6.0.7; 6.3.7; 1.12.3; 1.8.0; 1.11.1; 1.12.4; 1.10.0; 1.12.0; 1.8.1; 1.10.1; 1.12.1; 1.12.6; 1.14.0; 1.10.2; 1.12.7; 1.12.2; 1.6.0; 1.9.0; 1.11.0; 1.7.0; 1.13.0; 1.8.4; 1.13.1; 1.9.1; 1.12.5; 1.13.2; 8.1.7.21512; 8.1.7; 8.1.5; 8.1.3.21242; 8.1.3; 8.1.5.21322; 8.1.7.21417; 1.14.1; 1.15.1; 1.15.2; 1.15.3; 1.15.4; 1.15.5; 1.15.6; 1.16.0; 1.16.1; 1.16.2; 1.16.3; 1.18.0; 1.18.1; 1.20.0; 1.21.0; 1.21.1; 1.21.2; 1.21.3; 1.22.0; 1.22.1; 1.22.2; 1.22.3; 1.22.4; 1.24.0; 1.24.1; 1.24.2; 1.24.3; 1.24.4; 1.26.0; 1.24.5; 1.26.1; 1.27.0; 1.15.0; 1.17.0; 1.17.1; 1.17.2; 1.19.0; 1.20.1; 1.20.2; 1.20.3; 1.20.4; 1.20.5; 1.20.6; 1.23.0; 1.23.1; 1.20.7; 1.20.8; 1.25.0; 1.25.1; 1.25.2; 1.27.1; 1.27.2; 7.3.13; 7.3.15; 7.4.1; 7.4.1.20425; 7.4.1.20439; 7.4.3; 7.4.3.20679; 7.4.5; 7.5.1.20813; 7.5.1.20833; 7.5.3; 7.5.5; 8.0.1.21160; 8.0.1.21164; 7.5.7; 7.5.9; 7.5.11; 8.1.7.21585; 7.5.13.21586; 7.5.13.21598; 8.2.1.21612; 8.2.1.21650; 7.5.15.21611; 7.5.17.21680; 8.2.3.30119; 8.2.4.30130; 8.4.0; 7.5.19; 8.4.1.30298; 8.4.2.30317; 8.4.1.30307; 7.5.20; 8.4.3; 8.4.4.30419; 8.4.4.30467; 7.5.21.21732; 8.4.5.30483 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-20339
- 2026-10-03 Alias added: GHSA-g59m-qx73-q3c6
- 2026-10-25 Priority changed: LOW → MEDIUM
References
Other 1
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Sources
- CVE-2026-20339 · CVE Program
- CVE-2026-20339 · NVD
- FIRST EPSS
- GHSA-g59m-qx73-q3c6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences