Use After Free Vulnerability in ckolivas lrzip Product
CVE-2025-15570

4.8MEDIUM

Key Information:

Vendor

Ckolivas

Status
Lrzip
Vendor
CVE Published:
10 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-15570?

A use after free vulnerability has been identified in the ckolivas lrzip software, specifically within the lzma_decompress_buf function in stream.c. This issue arises from improper handling of memory, leading to potential exploitation if a local attacker manipulates the system. Although the problem was reported through an issue tracking system, the project team has not yet issued a response. The exploit has been publicly disclosed, raising concerns about its potential impact.

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Affected Version(s)

lrzip 0.651

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-15570 - Proof of Concept

References

https://vuldb.com/?id.344926
vdb-entrytechnical-description
https://vuldb.com/?ctiid.344926
signaturepermissions-required
https://vuldb.com/?submit.752595
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ziiiro (VulDB User)
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