Summary

UnrealIRCd 5 and 6 are vulnerable to crashes if a user sends a specific command when deny dcc blocks or a spamfilter are active on the target server. Additionally, if SASL support is enabled alongside a services account, a malicious user can intentionally cause the UnrealIRCd server to crash.

Title

UnrealIRCd - The most widely deployed IRC server - UnrealIRCd

Description

UnrealIRCd - The most widely deployed IRC server

Keywords

more, read, release, testing, fixes, candidate, issue, have, version, stable, security, crash, issues, there, first, upgrade, support

NS Lookup

A 104.18.24.153, A 104.18.25.153

Dates

Created 2026-02-16

Updated 2026-02-16

Summarized 2026-03-02