CVE-2025-11153

Name: CVE-2025-11153
Creator: NVD / NIST
Published: 2025-09-30T13:15:48.79+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2025-11153 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 143.0.3.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 143.0.3.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.21%

11.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 143.0.3

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1987481Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-80/Vendor Advisory

Timeline

Published: Sep 30, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-11153?

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 143.0.3.

How severe is CVE-2025-11153?

CVE-2025-11153 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2025-11153?

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-2025-11153?

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

Scan your code now

Source: NVD / NIST