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VulnerabilityPublished Updated

CVE-2025-13026: Sandbox escape due to incorrect boundary conditions in the Graphics: WebGPU component

Source GCVE Database

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Authoritative record:CVE-2025-13026· Critical 9.8

Not known to be exploited · CVSS 9.8 Critical · fixed in 145 : patch affected systems as a priority.

Data as of 13 Nov 2026, 20:46 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 145
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

AI-suggested

Users and administrators should update Firefox to version 145 or later, where this vulnerability is fixed. The vendor advisory confirms that the issue is resolved in Firefox 145. No additional mitigations are required beyond applying the official update.

Description

CVE-2025-13026 is a critical sandbox escape vulnerability in the Graphics: WebGPU component of Firefox versions prior to 145. It arises from incorrect boundary conditions that could allow an attacker to break out of the browser's sandbox environment. This vulnerability was fixed in Firefox 145. The issue is part of a set of memory safety bugs addressed in Firefox 145 and Thunderbird 145, some of which showed evidence of memory corruption and potential for arbitrary code execution.

References

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