Home Services Open/Close Dropdown Menu Publications Resources About us Subscription Security Bulletin Open/Close Dropdown Menu Incident Reporting Cybersecurity Services Providers Connect Programme Training and Events Security News Mozilla Firefox Denial of Service Vulnerability Release Date: 9 Sep 2026 14 Views RISK: Medium Risk Medium Risk TYPE: Clients - Browsers A vulnerability was identified in Mozilla Firefox. A remote attacker could exploit some of these vulnerabilities to trigger denial of service condition on the targeted system. Impact Denial of Service System / Technologies affected Versions prior to: Firefox for iOS 155.1 Solutions Before installation of the software, please visit the vendor web-site for more details. Apply fixes issued by the vendor: Firefox for iOS 155.1 Vulnerability Identifier CVE-2026-86853 Source Mozilla Related Link https://www.mozilla.org/en-US/security/advisories/mfsa2026-89/ Related Tags Mozilla Firefox Denial of Service Share with Share on facebook Share on LinkedIn Share on twitter Share via WhatsApp Copy this url to clipboard Share via Email Previous Ubuntu Linux Kernel Multiple Vulnerabilities 7 Sep 2026 1460 Views Next Microsoft Monthly Security Update (September 2026) 9 Sep 2026 125 Views