CVE-2025-31115

Published Apr 3, 2025 CWE-366 EPSS 0.65% (49th pctl)

Overview

CVE-2025-31115 is a known-severity vulnerability. It was published on April 3, 2025.

Technical Description

XZ Utils provide a general-purpose data-compression library plus command-line tools. In XZ Utils 5.3.3alpha to 5.8.0, the multithreaded .xz decoder in liblzma has a bug where invalid input can at least result in a crash. The effects include heap use after free and writing to an address based on the null pointer plus an offset. Applications and libraries that use the lzma_stream_decoder_mt function are affected. The bug has been fixed in XZ Utils 5.8.1, and the fix has been committed to the v5.4, v5.6, v5.8, and master branches in the xz Git repository. No new release packages will be made from the old stable branches, but a standalone patch is available that applies to all affected releases.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHub github.com/tukaani-project/xz/commit/d5a2ffe41bb77b918a8c96084885d4dbe4bf6480 GitHub github.com/tukaani-project/xz/security/advisories/GHSA-6cc8-p5mm-29w2 Ref tukaani.org/xz/xz-cve-2025-31115.patch Ref www.openwall.com/lists/oss-security/2025/04/03/1 Ref www.openwall.com/lists/oss-security/2025/04/03/2 Ref www.openwall.com/lists/oss-security/2025/04/03/3 Ref cert-portal.siemens.com/productcert/html/ssa-082556.html

Frequently Asked Questions

What is CVE-2025-31115?

CVE-2025-31115 is a known-severity vulnerability. It was published on April 3, 2025.

How severe is CVE-2025-31115?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2025-31115?

How can CyberStrike help with CVE-2025-31115?

CyberStrike's AI-powered security agents can automatically detect CVE-2025-31115 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.