CVE-2024-9481: Avast Antivirus

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

An out-of-bounds write in the engine module in AVG/Avast Antivirus signature <24092400 released on 24/Sep/2024 on MacOS allows a malformed eml file to crash the application during file processing.

Affected products

• Avast Antivirus: before 24092400 (fixed in 24092400)
• Avg Antivirus: before 24092400 (fixed in 24092400)

Published 2024-10-04. Last modified 2026-06-17.