Security Alert (A25-10-12): Multiple Vulnerabilities in Firefox


 

Published on: 15 October 2025

Description:

Mozilla has published the advisories (MFSA2025-81, MFSA2025-82, MFSA2025-83, MFSA2025-84 and MFSA2025-85) 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 115.29, 140.4
  • Firefox Windows versions prior to version 144

 

Impact:

Successful exploitation of the vulnerabilities could lead to remote code execution, denial of service, elevation of privilege, information disclosure, security restriction bypass, spoofing or tampering 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 144 (Windows)
https://www.mozilla.org/en-US/firefox/all/#product-desktop-release
Firefox ESR 115.29, 140.4 (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/mfsa2025-81/
  • https://www.mozilla.org/en-US/security/advisories/mfsa2025-82/
  • https://www.mozilla.org/en-US/security/advisories/mfsa2025-83/
  • https://www.mozilla.org/en-US/security/advisories/mfsa2025-84/
  • https://www.mozilla.org/en-US/security/advisories/mfsa2025-85/
  • https://www.hkcert.org/security-bulletin/mozilla-products-multiple-vulnerabilities_20251015
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-11708 (to CVE-2025-11721)


Tag: Firefox , Mozilla
Tags