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OpenAdvisories
High · 7.8 CVE-2025-8351 EUVD-2025-200023GHSA-mgc9-26px-4hjp

Avira antivirus engine heap buffer OOB read when scanning a malformed file

Published Dec 1, 2025 · Updated Jun 12, 2026 · Assigned by NLOK

Description

Heap-based Buffer Overflow, Out-of-bounds Read vulnerability in Avira Antivirus engine when scanning a malformed file may allow Local Execution of Code or Denial-of-Service of the antivirus engine process.

This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.98.

Affected products

VendorProductAffectedFixed
Gen Digital Avira Antivirus < 8.3.70.98 8.3.70.98

References