Solanum before commit 2ce64de contains a heap-based buffer overflow vulnerability that allows a malicious linked
Source GCVE Database
Not known to be exploited · CVSS 8.5 High : upgrade to 2ce64debf65e9710e9eea099ada93dbf6655b5ff 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 2ce64debf65e9710e9eea099ada93dbf6655b5ff
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 2ce64debf65e9710e9eea099ada93dbf6655b5ff.
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
If you cannot patch yet, restrict or monitor linked server connections to mitigate risk.
Description
Solanum software versions before commit 2ce64de have a heap-based buffer overflow vulnerability. This flaw allows a malicious linked server to corrupt memory by sending overly long channel names in JOIN or SJOIN messages. Exploitation can cause crashes or potentially remote code execution by triggering strcpy and sprintf overflows in specific functions.
References
- nvd.nist.gov/vuln/detail/CVE-2026-121602 (opens in a new tab)
- github.com/solanum-ircd/solanum/pull/551 (opens in a new tab)
- github.com/solanum-ircd/solanum/commit/2ce64debf65e9710e9eea099ada93dbf6655b5ff (opens in a new tab)
- github.com/solanum-ircd/solanum (opens in a new tab)
- github.com/solanum-ircd/solanum/blob/2ea1382e4262b212a91034258c466f0f6754cd61/ircd/channel.c (opens in a new tab)
- github.com/solanum-ircd/solanum/blob/2ea1382e4262b212a91034258c466f0f6754cd61/modules/core/m_join.c (opens in a new tab)
- vulncheck.com/advisories/solanum-before-commit-2ce64de-heap-buffer-overflow-via-join-and-sjoin (opens in a new tab)