{"id":"CVE-2026-121602","published":"2026-11-03T17:18:11.387","lastModified":"2026-11-03T19:18:05.217","description":"Solanum before commit 2ce64de contains a heap-based buffer overflow vulnerability that allows a malicious linked server to corrupt memory by sending overlong channel names in JOIN or SJOIN messages. Attackers controlling a peer server can trigger strcpy and sprintf overflows in ms_join and ms_sjoin to crash the ircd or potentially achieve remote code execution.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","cwes":["CWE-122"],"vendors":[],"products":[],"references":[{"url":"https://github.com/solanum-ircd/solanum","tags":[]},{"url":"https://github.com/solanum-ircd/solanum/blob/2ea1382e4262b212a91034258c466f0f6754cd61/ircd/channel.c#L371-L385","tags":[]},{"url":"https://github.com/solanum-ircd/solanum/blob/2ea1382e4262b212a91034258c466f0f6754cd61/modules/core/m_join.c#L507","tags":[]},{"url":"https://github.com/solanum-ircd/solanum/commit/2ce64debf65e9710e9eea099ada93dbf6655b5ff","tags":[]},{"url":"https://github.com/solanum-ircd/solanum/pull/551","tags":[]},{"url":"https://www.vulncheck.com/advisories/solanum-before-commit-2ce64de-heap-buffer-overflow-via-join-and-sjoin","tags":[]}],"exploitRefs":[{"url":"https://github.com/solanum-ircd/solanum","tags":[]},{"url":"https://github.com/solanum-ircd/solanum/blob/2ea1382e4262b212a91034258c466f0f6754cd61/ircd/channel.c#L371-L385","tags":[]},{"url":"https://github.com/solanum-ircd/solanum/blob/2ea1382e4262b212a91034258c466f0f6754cd61/modules/core/m_join.c#L507","tags":[]},{"url":"https://github.com/solanum-ircd/solanum/commit/2ce64debf65e9710e9eea099ada93dbf6655b5ff","tags":[]},{"url":"https://github.com/solanum-ircd/solanum/pull/551","tags":[]}],"hasPoc":true,"ai":null}