CVE-2026-12324
Undergoing Analysis Undergoing Analysis - In Progress

CanvasWebGL Boundary Condition Flaw in Firefox

Publication date: 2026-06-16

Last updated on: 2026-06-16

Assigner: Mozilla Corporation

Description
Incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

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Meta Information

Published
2026-06-16
Last Modified
2026-06-16
Generated
2026-07-06
AI Q&A
2026-06-16
EPSS Evaluated
2026-07-05
NVD
CVE-2026-12324
EUVD
EUVD-2026-37070

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox 152
mozilla firefox_esr 140.12

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-703 The product does not properly anticipate or handle exceptional conditions that rarely occur during normal operation of the product.

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Executive Summary

This vulnerability involves incorrect boundary conditions in the Graphics: CanvasWebGL component of Mozilla Firefox. Essentially, there is a flaw in how the CanvasWebGL graphics component handles certain boundary conditions, which could potentially lead to unexpected behavior or security issues. The vulnerability was addressed and fixed in Firefox version 152 and Firefox ESR 140.12.

Impact Analysis

The impact of this vulnerability could involve security risks related to the graphics rendering process in Firefox. Incorrect boundary conditions in the CanvasWebGL component might be exploited to cause crashes, data corruption, or potentially allow an attacker to execute arbitrary code or bypass security restrictions. Users running affected versions of Firefox before 152 or Firefox ESR before 140.12 could be at risk.

Mitigation Strategies

To mitigate this vulnerability, update your Firefox browser to version 152 or later, or Firefox ESR to version 140.12 or later, where the issue has been fixed.

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