Security Alert (A25-12-09): Multiple Vulnerabilities in Firefox

Description:

Mozilla has published the advisories (MFSA2025-92, MFSA2025-93 and MFSA2025-94) to address multiple vulnerabilities in Firefox. A remote attacker could entice a user to open a web page with specially crafted content on a vulnerable browser to exploit the vulnerabilities.

Affected Systems:

• Firefox ESR Windows versions prior to version 115.31, 140.6
• Firefox Windows versions prior to version 146

Impact:

Successful exploitation of the vulnerabilities could lead to remote code execution, elevation of privilege, security restriction bypass or spoofing on an affected system.

Recommendation:

Mozilla has released new versions of the product to address the issues and they can be downloaded at the following URLs:
Firefox 146 (Windows)
https://www.mozilla.org/en-US/firefox/all/#product-desktop-release
Firefox ESR 115.31, 140.6 (Windows)
https://www.mozilla.org/en-US/firefox/all/#product-desktop-esr

Users of affected systems should follow the recommendations provided by the vendor and take immediate actions to mitigate the risk.

More Information:

• https://www.mozilla.org/en-US/security/advisories/mfsa2025-92/
• https://www.mozilla.org/en-US/security/advisories/mfsa2025-93/
• https://www.mozilla.org/en-US/security/advisories/mfsa2025-94/
• https://www.hkcert.org/security-bulletin/mozilla-firefox-multiple-vulnerabilities_20251210
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-14321 (to CVE-2025-14333)