CVE-2005-2384: Alwil Avast Antivirus

Medium severity, CVSS 5.0. EPSS: 3.5% chance of exploitation in the next 30 days.

Directory traversal vulnerability in a third-party compression library (UNACEV2.DLL), as used in avast! Antivirus Home/Professional Edition 4.6.665 and Server Edition 4.6.460, allows remote attackers to write arbitrary files via an ACE archive containing filenames with (1) .. or (2) absolute pathnames.

Affected products

• Alwil Avast Antivirus: version 4.6.460 only; version 4.6.665 only

Published 2005-07-27. Last modified 2026-06-16.