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CVE-2025-0238

5.3 · MEDIUM

Assuming a controlled failed memory allocation, an attacker could have caused a use-after-free, leading to a potentially exploitable crash.

Published Jan 7, 2025CWE-416EPSS 0.79%

Overview

CVE-2025-0238 is a medium-severity vulnerability. It was published on January 7, 2025 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Assuming a controlled failed memory allocation, an attacker could have caused a use-after-free, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Firefox ESR 115.19, Thunderbird 134, and Thunderbird 128.6.

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

Refbugzilla.mozilla.org/show_bug.cgi?id=1915535Refwww.mozilla.org/security/advisories/mfsa2025-01/Refwww.mozilla.org/security/advisories/mfsa2025-02/Refwww.mozilla.org/security/advisories/mfsa2025-03/Refwww.mozilla.org/security/advisories/mfsa2025-04/Refwww.mozilla.org/security/advisories/mfsa2025-05/Reflists.debian.org/debian-lts-announce/2025/01/msg00004.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-0238?

CVE-2025-0238 is a medium-severity vulnerability. It was published on January 7, 2025 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-0238?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-0238?

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.

How can CyberStrike help with CVE-2025-0238?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-0238 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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