JavaScript Engine Miscompilation Vulnerability in Firefox
CVE-2025-13024

9.8CRITICAL

Key Information:

Vendor

Mozilla
Status
Firefox
Thunderbird
Vendor
CVE Published:
11 November 2025

What is CVE-2025-13024?

This vulnerability arises from a Just-In-Time (JIT) miscompilation within the JavaScript Engine of Firefox, impacting versions prior to 145. Attackers could exploit this flaw to execute unintended code, potentially leading to various security risks for users. It highlights the importance of maintaining updated browser versions to mitigate exposure to such vulnerabilities. For more information and security advisories, refer to Mozilla's official documentation.

Affected Version(s)

Firefox < 145

Thunderbird < 145

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1992902
https://www.mozilla.org/security/advisories/mfsa2025-87/
https://www.mozilla.org/security/advisories/mfsa2025-90/

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Project KillFuzz of Qrious Secure
JSON
.