CVE-2026-6769
Received Received - Intake
Privilege Escalation in Firefox Debugger Component Fixed

Publication date: 2026-04-21

Last updated on: 2026-04-22

Assigner: Mozilla Corporation

Description
Privilege escalation in the Debugger 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
2026-06-15
NVD
CVE-2026-6769
EUVD
EUVD-2026-24110
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 to 140.10.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-269 The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
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Executive Summary

This vulnerability is a privilege escalation issue found in the Debugger component of Mozilla Firefox. It allows an attacker to gain higher privileges than intended within the affected software.

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

Impact Analysis

This vulnerability could allow an attacker to escalate their privileges within the Firefox Debugger component, potentially enabling unauthorized actions or access to sensitive functions or data.

Mitigation Strategies

To mitigate this privilege escalation vulnerability in the Debugger component, update Firefox to version 150 or later, or Firefox ESR to version 140.10 or later.

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