CVE-2023-25751

Name: CVE-2023-25751
Creator: NVD / NIST
Published: 2023-06-02T17:15:11.947+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.69%

Last modified Jun 17, 2026

CVE-2023-25751 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Sometimes, when invalidating JIT code while following an iterator, the newly generated code could be overwritten incorrectly. This could lead to a potentially exploitable crash. EPSS estimates a 0.69% chance of exploitation in the next 30 days.

Description

Sometimes, when invalidating JIT code while following an iterator, the newly generated code could be overwritten incorrectly. This could lead to a potentially exploitable crash. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.69%

48.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 111.0
Mozilla	Firefox Esr	< 102.9
Mozilla	Thunderbird	< 102.9

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1814899Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-09/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-10/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-11/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1814899Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-09/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-10/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-11/Vendor Advisory

Timeline

Published: Jun 2, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-25751?

How severe is CVE-2023-25751?

CVE-2023-25751 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.

How do I fix CVE-2023-25751?

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-2023-25751?

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

Scan your code now

Source: NVD / NIST