CVE-2026-6769
Privilege Escalation in Firefox Debugger Component Fixed
Publication date: 2026-04-21
Last updated on: 2026-04-22
Assigner: Mozilla Corporation
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| 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 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
What immediate steps should I take to mitigate this vulnerability?
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.