CVE-2026-6764
Received Received - Intake
Incorrect Boundary Validation in Firefox Device Interfaces DOM

Publication date: 2026-04-21

Last updated on: 2026-04-22

Assigner: Mozilla Corporation

Description
Incorrect boundary conditions in the DOM: Device Interfaces component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
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Meta Information
Published
2026-04-21
Last Modified
2026-04-22
Generated
2026-06-16
AI Q&A
2026-04-21
EPSS Evaluated
2026-06-14
NVD
CVE-2026-6764
EUVD
EUVD-2026-24105
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
mozilla firefox to 150.0 (exc)
mozilla firefox to 140.10.0 (exc)
mozilla thunderbird From 140.0 (inc) to 140.10.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
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Impact Analysis

This vulnerability involves incorrect boundary conditions in the DOM: Device Interfaces component of Firefox. Such issues can potentially lead to unexpected behavior or security risks when interacting with device interfaces through the browser.

It was fixed in Firefox 150 and Firefox ESR 140.10, so using versions prior to these may expose you to this vulnerability.

Executive Summary

This vulnerability involves incorrect boundary conditions in the DOM: Device Interfaces component of Mozilla Firefox. Essentially, this means that the software did not properly handle certain limits or edges in the code related to device interfaces within the Document Object Model (DOM), which could lead to unexpected behavior or security issues.

The issue was addressed and fixed in Firefox version 150 and Firefox ESR 140.10.

Mitigation Strategies

To mitigate this vulnerability, update Firefox to version 150 or later, or Firefox ESR to version 140.10 or later, where the issue has been fixed.

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