CVE-2025-5264

Name: CVE-2025-5264
Creator: NVD / NIST
Published: 2025-05-27T13:15:22.2+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.14%

Last modified Jun 17, 2026

CVE-2025-5264 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. 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.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

EPSS Probability

0.14%

3.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 115.24.0
Mozilla	Firefox	< 139.0
Mozilla	Firefox	>= 116.0, < 128.11.0

References

Timeline

Published: May 27, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-5264?

How severe is CVE-2025-5264?

CVE-2025-5264 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.

How do I fix CVE-2025-5264?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-5264?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST