CVE-2006-6811: KsIRC 1.3.12 allows remote attackers to cause a denial of service (crash) via a long PRIVMSG string when co...

Security readout for executives and security teams

CVE-2006-6811 is an old denial-of-service flaw in KsIRC 1.3.12. A remote IRC-side message can crash the client through an assertion failure and NULL pointer dereference. The business impact is interruption for users still running this legacy IRC client, not evidence of system compromise. Exposure is likely limited to legacy KDE/KsIRC 1.3.12 installations or old Linux distributions that still include it. Modern enterprise exposure is probably low unless IRC clients are retained for operations, support, or archival workflows. Treat this as a low-priority legacy cleanup unless KsIRC remains in active operational use. It can crash a user application but the provided evidence does not support data theft, privilege escalation, or active exploitation. Mitigation focus: Inventory endpoints for KsIRC 1.3.12 or bundled KDE IRC client packages.; Apply applicable KDE or Linux distribution vendor updates where still available.; Retire unsupported KsIRC installations if fixed packages cannot be confirmed..

Prepared

Jun 29, 2026, 08:30 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.