Mozilla Firefox Security Updates – 11 March 2026

The addressed vulnerabilities could allow the attacker to perform spoofing attacks, bypass security restrictions, perform denial-of-service attacks, execute arbitrary code, and gain access to the affected system.

Sample of the addressed vulnerabilities:

1. Mozilla Firefox Memory Safety Bugs Vulnerability (CVE-2026-3847):

• CVSS: 8.8
• Attack Vector: Network
• Attack Complexity: Low
• Privileges Required: None
• User Interaction: Required
• Consequences: Gain Access

2. Mozilla Firefox Same-Origin Policy Bypass in the CSS Parsing and Computation Component Vulnerability (CVE-2026-3846):

• CVSS: 6.5
• Attack Vector: Local
• Attack Complexity: Low
• Privileges Required: None
• User Interaction: Required
• Consequences: Bypass Security