CVE-2025-8351

Name of the Vulnerable Software and Affected Versions Avast Antivirus versions 8.3.70.94 through 8.3.70.97

Description A heap-based buffer overflow and out-of-bounds read issue exists in Avast Antivirus on MacOS when scanning a malformed file. This can lead to local execution of code or a denial-of-service of the antivirus engine process. The issue is triggered when processing a specially crafted file. The vulnerability affects the antivirus engine.

Recommendations Update Avast Antivirus to version 8.3.70.98 or later.