CVE-2026-121602

MEDIUMCVSS 6.5/10

Last modified

CVE-2026-121602 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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..

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

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
solanum-ircdsolanum< 2ce64debf65e9710e9eea099ada93dbf6655b5ff

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-121602?
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.
How severe is CVE-2026-121602?
CVE-2026-121602 has a CVSS score of 6.5/10 (MEDIUM severity).
How do I fix CVE-2026-121602?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST