CVE-2005-1719: Alwil Avast Antivirus

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

Unknown vulnerability in ALWIL avast! antivirus 4 (4.6.6230) and earlier, when running on Windows NT 4.0, does not properly detect certain viruses.

Affected products

• Alwil Avast Antivirus: version 4.0.168 only; version 4.0.172 only; version 4.0.183 only; version 4.0.202 only; version 4.0.211 only; version 4.0.229 only; …

Published 2005-05-24. Last modified 2026-06-16.