CVE-2026-20347: ClamAV Mach-O File Format Processing Memory Corruption Vulnerability

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Status

Not Exploited

Patch Tuesday

2026-Aug

Released

2026-08-11

EPSS Score

0.33% (percentile: 25.3%)

Affected Products (1)

Other

• 21699-17084

Revision History

• 2026-08-11: Information published.