Mozilla Firefox Security Update – 28 January 2026

Mozilla has released an updated Firefox version 147.0.2 to fix multiple vulnerabilities.

The addressed vulnerabilities could allow the attacker to bypass security restrictions, corrupt memory, execute arbitrary code, and gain access to the affected system.

Sample of the addressed vulnerabilities:

Mozilla Use-After-Free in the Layout: Scrolling and Overflow Component Vulnerability (CVE-2026-24869):

  • CVSS: 8.1
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Consequences: Gain Access
Vulnerabilities
  • CVE-2026-24868
  • CVE-2026-24869
Mitigations

The enterprise should deploy this patch as soon as the testing phase is completed.

Mozilla Firefox Security Advisory

References