Denial of Service Vulnerability in LZ4 Software by LZ4
CVE-2025-62813

5.9MEDIUM

Key Information:

Vendor

Lz4 Project

Status
Lz4
Vendor
CVE Published:
23 October 2025

What is CVE-2025-62813?

A vulnerability in LZ4 processing can lead to application crashes if untrusted LZ4 frames are handled improperly. The LZ4F_createCDict_advanced function contains flaws in NULL checks that may be exploited, potentially resulting in a denial of service and impacting overall application stability.

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Affected Version(s)

LZ4 0 <= 1.10.0

References

https://github.com/lz4/lz4/pull/1593
https://github.com/lz4/lz4/commit/f64efec011c058bd7034857...

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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