- 128/2025
- High
Mozilla has released an updated version of Firefox, 139.0.4 to fix multiple vulnerabilities.
The addressed vulnerabilities could allow the remote attacker to conduct denial of service attacks or execute arbitrary code and gain access to the affected system.
Sample of the addressed vulnerabilities:
Mozilla Firefox Code Execution Vulnerability (CVE-2025-49709):
- CVSS: 8.8
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Consequences: Gain Access
Vulnerabilities
- CVE-2025-49709
- CVE-2025-49710
Mitigations
The enterprise should deploy this patch as soon as the testing phase is completed.