CVE-2025-15571 MEDIUM

CVE-2025-15571: ckolivas lrzip stream.c ucompthread null pointer dereference

Vendor Ckolivas
Product lrzip
Weakness CWE-476
Published February 10, 2026
Last update February 23, 2026

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 10, 2026 CVE published
February 23, 2026 Record updated