Irssi 1.3.x and 1.4.x before 1.4.4 has a use-after-free because of use of a stale special…
Priority LOW 32CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
Irssi 1.3.x and 1.4.x before 1.4.4 has a use-after-free because of use of a stale special collector reference. This occurs when printing of a non-formatted line is concurrent with printing of a formatted line.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00808 57th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
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: Moderate. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2023-29132
- 2026-10-03 Alias added: GHSA-rx4q-gwv4-r27p
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-2023-29132 · CVE Program
- CVE-2023-29132 · NVD
- FIRST EPSS
- GHSA-rx4q-gwv4-r27p · GitHub Advisory Database · CC BY 4.0
- CVE-2023-29132 · 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