NULL pointer dereference in Ckolivas Lrzip
CVE-2025-15571
A security vulnerability has been detected in ckolivas lrzip up to 0.651. This vulnerability affects the function ucompthread of the file stream.c. Such manipulation leads to null pointer dereference. The attack can only be performed from a local environment. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (5.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 5.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Ckolivas Lrzip — versions 0.651
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/ckolivas/lrzip/issues/263 (issue-tracking, Exploit, Issue Tracking)
- github.com/user-attachments/files/21726331/PoC_NPD.zip (Exploit, exploit)
- github.com/ckolivas/lrzip/ (Product, product)
Frequently asked questions
- What is CVE-2025-15571?
- CVE-2025-15571 is a low-severity vulnerability in Ckolivas Lrzip, classified under Improper Resource Shutdown or Release. CVSS score: 3.3/10. Published 2026-02-10.
- How severe is CVE-2025-15571?
- Low severity. CVSS v3 base score is 3.3 out of 10.