Mozilla has released security updates to address security vulnerabilities in Firefox and Firefox ESR. An attacker could exploit some of these vulnerabilities to trigger denial of service, remote code execution, spoofing, security restriction bypass on the targeted system. Security vulnerabilities fixed in Firefox 145, Firefox ESR 115.30 and Firefox ESR 140.5.

More information on vulnerabilities and updates is available in Mozilla security advisories:

• MFSA 2025-87
• MFSA2025-88
• MFSA2025-89

Source: mozilla.org