Sandbox Escape Vulnerability in Firefox by Mozilla
CVE-2025-13023

9.8CRITICAL

Key Information:

Vendor

Mozilla

Vendor
CVE Published:
11 November 2025

What is CVE-2025-13023?

A security flaw in the WebGPU component of Firefox allows for a sandbox escape due to improper boundary conditions. This vulnerability affects Firefox versions prior to 145, potentially enabling unauthorized access to sensitive system resources, compromising user security and privacy. It is crucial for users to update their browsers to the latest version to mitigate risks associated with this exploit. More information can be found in Mozilla's security advisories.

Affected Version(s)

Firefox < 145

Thunderbird < 145

References

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Oskar L
.