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CVE-2025-5264

4.8 · MEDIUM

Due to insufficient escaping of the newline character in the “Copy as cURL” feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user'…

Published May 27, 2025CWE-77EPSS 0.29%

Overview

CVE-2025-5264 is a medium-severity vulnerability. It was published on May 27, 2025 and has a CVSS 3.1 base score of 4.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Due to insufficient escaping of the newline character in the “Copy as cURL” feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system. This vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.

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=1950001Refwww.mozilla.org/security/advisories/mfsa2025-42/Refwww.mozilla.org/security/advisories/mfsa2025-43/Refwww.mozilla.org/security/advisories/mfsa2025-44/Refwww.mozilla.org/security/advisories/mfsa2025-45/Refwww.mozilla.org/security/advisories/mfsa2025-46/Reflists.debian.org/debian-lts-announce/2025/05/msg00043.htmlReflists.debian.org/debian-lts-announce/2025/05/msg00046.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-5264?

CVE-2025-5264 is a medium-severity vulnerability. It was published on May 27, 2025 and has a CVSS 3.1 base score of 4.8 (MEDIUM).

How severe is CVE-2025-5264?

This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-5264?

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-2025-5264?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-5264 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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