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CVE-2026-121602 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/solanum-ircd/solanum	[email protected]
https://github.com/solanum-ircd/solanum/blob/2ea1382e4262b212a91034258c466f0f6754cd61/ircd/channel.c#L371-L385	[email protected]
https://github.com/solanum-ircd/solanum/blob/2ea1382e4262b212a91034258c466f0f6754cd61/modules/core/m_join.c#L507	[email protected]
https://github.com/solanum-ircd/solanum/commit/2ce64debf65e9710e9eea099ada93dbf6655b5ff	[email protected]
https://github.com/solanum-ircd/solanum/pull/551	[email protected]
https://www.vulncheck.com/advisories/solanum-before-commit-2ce64de-heap-buffer-overflow-via-join-and-sjoin	[email protected]

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-122	Heap-based Buffer Overflow	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Nov 3, 2026	CVE Modified	CISA-ADP
Nov 3, 2026	New CVE Received	[email protected]