CVE-2026-20339
Last modified
CVE-2026-20339 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.33% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| 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 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
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- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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