Security Alert (A25-09-13): Multiple Vulnerabilities in Firefox

Description:

Mozilla has published the advisories (MFSA2025-73, MFSA2025-74 and MFSA2025-75) 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 115.28, 140.3
• Firefox Windows versions prior to version 143

Impact:

Successful exploitation of the vulnerabilities could lead to remote code execution, information disclosure or security restriction bypass 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 143 (Windows)
https://www.mozilla.org/en-US/firefox/all/#product-desktop-release
Firefox ESR 115.28, 140.3 (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/mfsa2025-73/
• https://www.mozilla.org/en-US/security/advisories/mfsa2025-74/
• https://www.mozilla.org/en-US/security/advisories/mfsa2025-75/
• https://www.hkcert.org/security-bulletin/mozilla-products-multiple-vulnerabilities_20250917
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-10527 (to CVE-2025-10537)