Privilege Escalation in Firefox Notifications Component by Mozilla
CVE-2025-14323

8.8HIGH

Key Information:

Vendor

Mozilla
Status
Firefox
Firefox Esr
Thunderbird
Vendor
CVE Published:
9 December 2025

What is CVE-2025-14323?

A privilege escalation vulnerability exists in the Notifications component of Firefox, which allows an attacker to gain elevated access permissions. Affected versions include Firefox versions prior to 146, as well as Firefox ESR versions below 115.31 and 140.6. Users are advised to update to the latest version to safeguard against potential exploitation.

Affected Version(s)

Firefox < 146

Firefox ESR < 115.31

Firefox ESR < 140.6

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1996555
https://www.mozilla.org/security/advisories/mfsa2025-92/
https://www.mozilla.org/security/advisories/mfsa2025-93/

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

tiebuchen
JSON
.