Remote Code Execution Vulnerability Affecting Firefox Browser
CVE-2025-10534

8.1HIGH

Key Information:

Vendor

Mozilla

Vendor
CVE Published:
16 September 2025

What is CVE-2025-10534?

This vulnerability in the Firefox browser allows potential attackers to execute arbitrary code on affected systems when users are tricked into accessing malicious web content. It specifically impacts versions of Firefox prior to 143, emphasizing the importance of keeping browsers updated to the latest versions to mitigate such risks. Mozilla has addressed this issue in their security advisories, and users are urged to upgrade to the latest version to ensure their security.

Affected Version(s)

Firefox < 143

Thunderbird < 143

References

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Emma ZĂĽhlcke
.
CVE-2025-10534 : Remote Code Execution Vulnerability Affecting Firefox Browser