Security Alert (A26-05-11): Multiple Vulnerabilities in FireFox

Description:

Mozilla has published the advisories (MFSA2026-40, MFSA2026-41 and MFSA2026-42) 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 115.35.2, 140.10.2
• Firefox Windows versions prior to version 150.0.2

Impact:

Successful exploitation of the vulnerabilities could lead to remote code execution 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 150.0.2 (Windows)
https://www.mozilla.org/en-US/firefox/all/#product-desktop-release
Firefox ESR 115.35.2, 140.10.2 (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/mfsa2026-40/
• https://www.mozilla.org/en-US/security/advisories/mfsa2026-41/
• https://www.mozilla.org/en-US/security/advisories/mfsa2026-42/
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-8090 (to CVE-2026-8094)