CVE-2008-1501: The send_user_mode function in s_user.c in (1) Undernet ircu 2.10.12.12 and earlier, (2) snircd 1.3.4 and e...

Security readout for executives and security teams

This is a remote crash flaw in old IRC server software. An attacker could send a malformed MODE command and cause the IRC daemon to stop, interrupting chat services. The provided sources do not show data theft, code execution, or confirmed active exploitation. Exposure is likely limited to organizations still running legacy ircu, snircd, or derivative IRC daemons reachable by untrusted clients or peers. Most modern environments are unlikely to use these versions, but public IRC networks, private legacy chat systems, or embedded old service builds should be checked. Prioritize remediation if any affected IRC daemon is internet-facing or supports business-critical communications. If no legacy IRC service is present, document non-applicability and move on. The business risk is service interruption, not proven data loss or system takeover. Mitigation focus: Identify and retire unsupported ircu or snircd deployments where possible.; Upgrade affected IRC daemons using upstream or distributor guidance.; Review the referenced snircd changeset and vendor advisories before patching..

Prepared

Jun 28, 2026, 19:09 UTC (UTC+00:00)

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