A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which…
Priority LOW 26CWE-476Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows attackers to cause a denial of service (DOS) via a crafted compressed file.
Why it matters now
EPSS 0.00719 54th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:long_range_zip_project:long_range_zip:0.631:*:*:*:*:*:*:* | 0.631 | Vulnerable | Long Range Zip Project |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
- cpe:2.3:a:long_range_zip_project:long_range_zip:0.631:*:*:*:*:*:*:* Versions 0.631 Vulnerable ·Long Range Zip Project
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-27345
- 2026-10-03 Alias added: GHSA-7h9p-4h36-3h37
References
Sources
- CVE-2021-27345 · CVE Program
- CVE-2021-27345 · NVD
- FIRST EPSS
- GHSA-7h9p-4h36-3h37 · GitHub Advisory Database · CC BY 4.0
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