- 109/2025
- High
Mozilla has released an updated Firefox version 138.0.4, Firefox ESR versions 128.10.1, and 115.23.1 to fix multiple vulnerabilities.
The addressed vulnerabilities could allow the remote attacker to obtain sensitive information, or execute arbitrary code and gain access to the affected system by persuading the victim to visit a specially crafted website.
The addressed vulnerabilities:
1. Mozilla Firefox Code Execution Vulnerability (CVE-2025-4919):
- CVSS: 8.8
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Consequences: Gain Access
2. Mozilla Firefox Information Disclosure Vulnerability (CVE-2025-4918):
- CVSS: 7.5
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Consequences: Obtain Information
It should be highlighted that Mozilla is aware that vulnerabilities “CVE-2025-4918” and “CVE-2025-4919” in Firefox software are being exploited in the wild.
Vulnerabilities
- CVE-2025-4918
- CVE-2025-4919
Mitigations
The enterprise should deploy this patch as soon as the testing phase is completed.