CVE-2006-1255: Mercur Messaging

High severity, CVSS 10.0. EPSS: 68.8% chance of exploitation in the next 30 days.

Stack-based buffer overflow in the IMAP service in Mercur Messaging 5.0 SP3 and earlier allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a long string to the (1) LOGIN or (2) SELECT command, a different set of attack vectors and possibly a different vulnerability than CVE-2003-1177.

Affected products

• Mercur Mercur Messaging: up to and including 2005_5.0_sp3

Published 2006-03-19. Last modified 2026-06-16.