CVE-2025-0237

Name: CVE-2025-0237
Creator: NVD / NIST
Published: 2025-01-07T16:15:38.323+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.59%

Last modified Jun 17, 2026

CVE-2025-0237 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. The WebChannel API, which is used to transport various information across processes, did not check the sending principal but rather accepted the principal being sent. This could have led to privilege escalation attacks. EPSS estimates a 0.59% chance of exploitation in the next 30 days.

Description

The WebChannel API, which is used to transport various information across processes, did not check the sending principal but rather accepted the principal being sent. This could have led to privilege escalation attacks. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.59%

43.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 128.6.0
Mozilla	Firefox	< 134.0
Mozilla	Thunderbird	< 128.6.0
Mozilla	Thunderbird	>= 129.0, < 134.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1915257Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-01/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-02/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-04/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-05/Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html

Timeline

Published: Jan 7, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-0237?

How severe is CVE-2025-0237?

CVE-2025-0237 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.

How do I fix CVE-2025-0237?

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-2025-0237?

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

Scan your code now

Source: NVD / NIST