Answer in brief
CVE-2026-121602 records a High severity (CVSS 8.5) vulnerability in Solanum before commit 2ce64de Heap Buffer Overflow via JOIN and SJOIN. The current sources do not mark it as known exploited. The current feed maps solanum-ircd/solanum (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps solanum-ircd/solanum (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| solanum-ircd/solanumgeneric | >=0 <2ce64debf65e9710e9eea099ada93dbf6655b5ff | 2ce64debf65e9710e9eea099ada93dbf6655b5ff |
Published upstream
Nov 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 3, 2026
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.
Quoted source text, attributed separately from HOL analysis.