CVE-2026-121603
Medium
Description
Solanum before commit 2ea1382 contains a buffer overflow vulnerability in ms_kill() that allows malicious linked servers to corrupt memory by sending an overlong kill reason. Attackers controlling a rogue or compromised peer server can send a reason exceeding KILLLEN that overflows a static 512-byte buffer, crashing the ircd or potentially achieving remote code execution.
SeverityMedium
CVSS6.5
Exploit probability—
ProductSolanum
PublishedNov 3, 2026
First seenNov 4, 2026
Weakness typeCWE-120CWE-120
How to fix
Update
- solanum-ircd solanum2ea1382e4262b212a91034258c466f0f6754cd61 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| solanum-ircd solanum | v < 2ea1382e4262b212a91034258c466f0f6754cd61 | 2ea1382e4262b212a91034258c466f0f6754cd61 |
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