CVE-2003-1336: Mirc

High severity, CVSS 9.3. EPSS: 35.7% chance of exploitation in the next 30 days.

Buffer overflow in mIRC before 6.11 allows remote attackers to execute arbitrary code via a long irc:// URL.

Affected products

• Mirc Mirc: up to and including 6.1

Published 2003-12-31. Last modified 2026-06-16.