Solanum before commit 2ea1382 contains a buffer overflow vulnerability in ms_kill() that allows malicious linked
Source GCVE Database
Not known to be exploited · CVSS 8.5 High : upgrade to 2ea1382e4262b212a91034258c466f0f6754cd61 soon.
Data as of 3 Nov 2026, 19:44 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 8.5 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 6.5 |
- Patch
- Available – fixed in 2ea1382e4262b212a91034258c466f0f6754cd61
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
Upgrade solanum to 2ea1382e4262b212a91034258c466f0f6754cd61.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| solanum-ircdsolanum | Affected
| Fixed in
|
GitHubsolanumpkg:github/solanumOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in Solanum at commit 2ea1382. Users should update to this commit or later to remediate the vulnerability. No other mitigation or temporary workaround is indicated.
Description
Solanum before commit 2ea1382 has a buffer overflow vulnerability in the ms_kill() function. This flaw allows malicious linked servers to send an overlong kill reason that exceeds the 512-byte buffer, causing memory corruption. Exploitation can crash the ircd or potentially lead to remote code execution.
References
- nvd.nist.gov/vuln/detail/CVE-2026-121603 (opens in a new tab)
- github.com/solanum-ircd/solanum/pull/550 (opens in a new tab)
- github.com/solanum-ircd/solanum/commit/2ea1382e4262b212a91034258c466f0f6754cd61 (opens in a new tab)
- github.com/solanum-ircd/solanum (opens in a new tab)
- github.com/solanum-ircd/solanum/blob/7bc7e34c04711247b932666e19ae900cba884540/modules/core/m_kill.c (opens in a new tab)
- vulncheck.com/advisories/solanum-before-commit-2ea1382-buffer-overflow-via-server-to-server-kill-handler (opens in a new tab)