CVE-2026-121602
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductSolanum
PublishedNov 3, 2026
First seenNov 4, 2026
Weakness typeCWE-122CWE-122
How to fix
Update
- solanum-ircd solanum2ce64debf65e9710e9eea099ada93dbf6655b5ff or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| solanum-ircd solanum | v < 2ce64debf65e9710e9eea099ada93dbf6655b5ff | 2ce64debf65e9710e9eea099ada93dbf6655b5ff |
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