CVE-2023-1585: Avast Antivirus

Medium severity, CVSS 6.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Avast and AVG Antivirus for Windows were susceptible to a Time-of-check/Time-of-use (TOCTOU) vulnerability in the Quarantine process, leading to arbitrary file/directory deletion. The issue was fixed with Avast and AVG Antivirus version 22.11 and virus definitions from 14 February 2023 or later.

Affected products

• Avast Antivirus: from 22.5, before 22.11 (fixed in 22.11)
• Avg Anti-Virus: from 22.5, before 22.11 (fixed in 22.11)

Published 2023-04-19. Last modified 2026-06-17.