CVE-2025-13021
CWE-703Published: November 11, 2025· Updated: Jun 17, 2026
Official Description
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 145 and Thunderbird 145.
Risk Analysis
This critical vulnerability involves incorrect boundary conditions in the Graphics: WebGPU component of Mozilla Firefox. With a CVSS score of 9.8, this flaw poses a significant risk, potentially leading to arbitrary code execution or information disclosure.
No public exploit is currently known for this vulnerability, and it is not listed in CISA's KEV catalog. The attack vector is network-based with low complexity, indicating it is remotely exploitable.
Users of Mozilla Firefox should update to Firefox 145 or later to mitigate this vulnerability. Regularly update all browser software to the latest versions to ensure security.
Technical Analysis
CVE-2025-13021 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (3)
Quick Facts
Related CVEs (CWE-703)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-13021 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts