Answer in brief
CVE-2026-20339 records a High severity (CVSS 7.5) vulnerability in ClamAV PESpin File Format Processing Integer Overflow Vulnerability. The current sources do not mark it as known exploited. The current feed maps Cisco/Cisco Secure Endpoint (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Cisco/Cisco Secure Endpoint (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Cisco/Cisco Secure Endpointgeneric | 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 | Not reported |
Published upstream
Aug 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 7, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-20339 records a High severity (CVSS 7.5) vulnerability in ClamAV PESpin File Format Processing Integer Overflow Vulnerability. The current sources do not mark it as known exploited. The current feed maps Cisco/Cisco Secure Endpoint (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Cisco/Cisco Secure Endpoint (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Cisco/Cisco Secure Endpointgeneric | 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 | Not reported |
Published upstream
Aug 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 7, 2026
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.
Quoted source text, attributed separately from HOL analysis.