An issue was discovered in Irssi before 1.0.4.
Priority MEDIUM 47CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
An issue was discovered in Irssi before 1.0.4. While updating the internal nick list, Irssi could incorrectly use the GHashTable interface and free the nick while updating it. This would then result in use-after-free conditions on each access of the hash table.
Why it matters now
EPSS 0.02935 87th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2017-10966
- 2026-10-03 Alias added: GHSA-3jw8-77gg-583w
References
More Irssi vulnerabilities
- TI-2017-08049 An issue was discovered in Irssi before 1.0.4. CVSS 3.0CRITICAL 9.8
- TI-2017-04886 The netjoin processing in Irssi 1.x before 1.0.2 allows attackers to cause a denial of… CVSS 3.0CRITICAL 9.8
- TI-2002-01759 irssi IRC client 0.8.4, when downloaded after 14-March-2002, could contain a backdoor in… CVSS 2.0HIGH 10.0
- TI-2019-11799 Irssi 1.2.x before 1.2.2 has a use-after-free if the IRC server sends a double CAP. CVSS 3.0CRITICAL 9.8
- TI-2019-04193 Irssi 1.1.x before 1.1.2 has a use after free when hidden lines are expired from the scroll buffer. CVSS 3.0CRITICAL 9.8
- TI-2018-05119 An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. CVSS 3.0CRITICAL 9.8
Sources
- CVE-2017-10966 · CVE Program
- CVE-2017-10966 · NVD
- FIRST EPSS
- GHSA-3jw8-77gg-583w · GitHub Advisory Database · CC BY 4.0
- CVE-2017-10966 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences