CVE-2025-9033: Gen Digital Avira Antivirus

High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days.

Heap buffer out-of-bounds read vulnerability in Avira Antivirus engine when scanning a malformed PDF 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 8.3.70.76.

Affected products

• Gen Digital Avira Antivirus: before 8.3.70.76 (fixed in 8.3.70.76)

Published 2026-06-12. Last modified 2026-07-23.