CVE-2005-4445: David Harris Pegasus Mail

Medium severity, CVSS 5.1. EPSS: 3.1% chance of exploitation in the next 30 days.

Off-by-one error in Pegasus Mail 4.21a through 4.21c and 4.30PB1 allows remote attackers to execute arbitrary code via a long email message header, which triggers a one-byte buffer overflow.

Affected products

• David Harris Pegasus Mail: version 4.21a only; version 4.21b only; version 4.21c only; version 4.30pb1 only

Published 2005-12-21. Last modified 2026-06-16.