What is CVE-2025-13023?

CVE-2025-13023 is a critical-severity vulnerability in Mozilla Firefox, classified under CWE-703. CVSS score: 9.8/10. Published 2025-11-11.

How severe is CVE-2025-13023?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Mozilla Firefox

CVE-2025-13023

Sandbox escape due to incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 145 and Thunderbird 145.

EPSS: 0.003 (23.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mozilla Firefox — versions 145
Mozilla Thunderbird — versions 145

Weakness classification (CWE)

CWE-703

References

security@mozilla.org (Permissions Required)
security@mozilla.org (Vendor Advisory)
security@mozilla.org

Frequently asked questions

What is CVE-2025-13023?: CVE-2025-13023 is a critical-severity vulnerability in Mozilla Firefox, classified under CWE-703. CVSS score: 9.8/10. Published 2025-11-11.
How severe is CVE-2025-13023?: Critical severity. CVSS v3 base score is 9.8 out of 10.