Mozilla Firefox Security Updates – 27 July 2025

Mozilla has released an updated Firefox version 141, Firefox ESR versions 140.1, 128.13, and 115.26 to fix multiple vulnerabilities.

The addressed vulnerabilities could allow the remote attacker to perform a denial of service attack, bypass security restrictions, obtain sensitive information, gain elevated privileges, execute arbitrary code, and gain access to the affected system.

Sample of the addressed vulnerabilities:

1. Mozilla Firefox Code Execution Vulnerability (CVE-2025-8035):

  • 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-2025-8027):

  • CVSS: 6.5
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Consequences: Obtain information
Vulnerabilities
  • CVE-2025-8027
  • CVE-2025-8028
  • CVE-2025-8029
  • CVE-2025-8030
  • CVE-2025-8031
  • CVE-2025-8032
  • CVE-2025-8033
  • CVE-2025-8034
  • CVE-2025-8035
  • CVE-2025-8036
  • CVE-2025-8037
  • CVE-2025-8038
  • CVE-2025-8039
  • CVE-2025-8040
  • CVE-2025-8041
  • CVE-2025-8042
  • CVE-2025-8043
  • CVE-2025-8044
Mitigations

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

Mozilla Firefox Security Advisory

References