ncompress 4.2.4 and earlier allows local users to overwrite arbitrary files via a symlink…
Priority LOW 11Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
ncompress 4.2.4 and earlier allows local users to overwrite arbitrary files via a symlink attack on temporary files using (1) zdiff or (2) zcmp, a different vulnerability than CVE-2004-0970.
Why it matters now
EPSS 0.00367 30th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 →
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2005-2991
- 2026-10-03 Alias added: GHSA-fh95-qp78-39wf
References
More Ncompress vulnerabilities
- TI-2006-01135 The decompress function in compress42.c in (1) ncompress 4.2.4 and (2) liblzw allows… CVSS 2.0HIGH 7.5
- TI-2001-01365 Stack-based buffer overflow in the comprexx function for ncompress 4.2.4 and earlier… CVSS 2.0HIGH 7.5
Sources
- CVE-2005-2991 · CVE Program
- CVE-2005-2991 · NVD
- FIRST EPSS
- GHSA-fh95-qp78-39wf · GitHub Advisory Database · CC BY 4.0
- CVE-2005-2991 · 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