CVE-2025-8351 – Scanning a malformed file in Avast Antivirus 8.3.70.94 on MacOS may result in remote code execution

CVE ID : CVE-2025-8351

Published : Dec. 1, 2025, 3:51 p.m. | 33 minutes ago

Description : Heap-based Buffer Overflow, Out-of-bounds Read vulnerability in Avast Antivirus on MacOS when scanning a malformed file may allow Local Execution of Code or Denial-of-Service of the anitvirus engine process.This issue affects Antivirus: from 8.3.70.94 before 8.3.70.98.

Severity: 9.0 | CRITICAL

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