CVE-2002-1675: Unreal Unrealircd

Medium severity, CVSS 6.4. EPSS: 2.7% chance of exploitation in the next 30 days.

Format string vulnerability in the Cio_PrintF function of cio_main.c in Unreal IRCd 3.1.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via format string specifiers.

Affected products

• Unreal Unrealircd: version 3.1.1 only

Published 2002-12-31. Last modified 2026-06-16.