Security Alert (A25-08-17): Multiple Vulnerabilities in Firefox


 

Published on: 20 August 2025

Description:

Mozilla has published the advisories (MFSA2025-64, MFSA2025-65, MFSA2025-66 and MFSA2025-67) to address multiple vulnerabilities in Firefox. A remote attacker could entice a user running a vulnerable browser to visit a web page with specially crafted content to exploit the vulnerabilities.

 

Affected Systems:

  • Firefox Windows versions prior to version 142
  • Firefox ESR Windows versions prior to version 115.27, 128.14, 140.2

 

Impact:

Successful exploitation of the vulnerabilities could lead to denial of service, 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 142 (Windows)
https://www.mozilla.org/en-US/firefox/all/#product-desktop-release
Firefox ESR 115.27, 128.14, 140.2 (Windows)
https://www.mozilla.org/en-US/firefox/all/#product-desktop-esr

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

 

More Information:

  • https://www.mozilla.org/en-US/security/advisories/mfsa2025-64
  • https://www.mozilla.org/en-US/security/advisories/mfsa2025-65
  • https://www.mozilla.org/en-US/security/advisories/mfsa2025-66
  • https://www.mozilla.org/en-US/security/advisories/mfsa2025-67
  • https://www.hkcert.org/security-bulletin/mozilla-products-multiple-vulnerabilities_20250820
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-9179 (to CVE-2025-9187)


Tag: Firefox , Mozilla
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