CVE-2026-20347

CVE CVE-2026-20347EUVD EUVD-2026-54532Published 2026-08-07T16:42:29.000ZLast changed 2026-08-07T21:10:28.000ZCVSS 7.5

What the advisory describes

A vulnerability in the Mach-O 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 Mach-O files during scanning, which may result in an out-of-bounds buffer read. An attacker could exploit this vulnerability by submitting a crafted Mach-O file 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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

• Cisco — Cisco Secure Endpoint 1.22.4; 1.18.0; 2.5.0; 7.1.5; 1.15.4; 1.12.2; 1.9.1; 1.1.0; 1.13.1; 7.5.1.20813; 2.10.1; 1.25.2; 8.1.7.21417; 1.12.5; 7.3.13; 7.5.11; 1.22.2; 7.5.17.21680; 6.1.5; 7.0.5; 1.14.0; 2.0.1; 6.3.7; 7.5.3; 1.25.0; 1.17.2; 1.11.0; 1.15.0; 1.16.1; 2.3.0; 1.23.1; 1.12.6; 7.3.1; 6.3.5; 7.2.5; 1.27.2; 7.4.5; 1.13.0; 1.19.0; 1.23.0; 2.4.0; 2.11.0; 2.0.0; 6.3.1; 2.2.0; 7.2.11; 8.4.3; 7.5.13.21598; 1.24.4; 1.21.2; 8.1.5; 7.5.15.21611; 8.4.0; 1.7.0; 7.2.7; 1.8.0; 1.18.1; 1.21.3; 7.1.1; 1.24.2; 7.3.3; 8.1.7.21512; 1.20.3; 1.10.0; 2.9.0; 6.1.9; 1.20.4; 1.10.1; 8.0.1.21164; 1.16.3; 6.2.9; 1.20.5; 1.26.1; 8.2.3.30119; 6.0.9; 8.1.7; 8.4.4.30467; 8.2.1.21612; 8.4.4.30419; 8.4.2.30317; 1.27.1; 1.20.7; 8.1.7.21585; 6.1.7; 8.1.3; 1.20.8; 8.0.1.21160; 1.22.1; 1.15.5; 7.2.3; 6.2.3; 1.24.1; 7.3.15; 7.4.1.20425; 7.3.9; 1.22.3; 7.5.9; 6.3.3; 7.5.13.21586; 8.4.1.30307; 2.6.0; 1.15.2; 1.12.1; 1.15.1; 7.2.13; 1.20.2; 1.16.0; 8.1.5.21322; 2.10.0; 7.5.5; 2.8.0; 1.8.1; 1.24.0; 1.17.0; 7.4.1; 1.11.1; 2.1.0.14; 6.2.1; 1.8.4; 1.15.3; 7.5.19; 6.0.7; 1.12.0; 7.4.3; 1.20.0; 6.2.5; 7.5.1.20833; 1.12.3; 1.27.0; 1.14.1; 1.16.2; 8.2.4.30130; 1.9.0; 1.15.6; 7.4.1.20439; 1.26.0; 1.12.7; 1.17.1; 1.21.1; 7.5.20; 1.12.4; 1.22.0; 8.4.5.30483; 2.0.2; 1.24.3; 7.5.7; 8.4.1.30298; 8.2.1.21650; 2.7.0; 1.13.2; 1.21.0; 6.2.19; 1.20.6; 8.1.3.21242; 7.3.5; 1.24.5; 1.6.0; 1.10.2; 7.5.21.21732; 7.4.3.20679; 1.25.1; 1.20.1

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Cisco — Secure Endpoint

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.