CVE-2024-5803: Avg Anti-Virus

High severity, CVSS 7.5. EPSS: 0.1% chance of exploitation in the next 30 days.

The AVGUI.exe of AVG/Avast Antivirus before versions before 24.1 can allow a local attacker to escalate privileges via an COM hijack in a time-of-check to time-of-use (TOCTOU) when self protection is disabled.

Affected products

  • Avg Avg Anti-Virus: before 24.1 (fixed in 24.1)
  • Avg/avast Antivirus: before 24.1 (fixed in 24.1)

Published 2024-10-03. Last modified 2026-06-17.