CVE-2026-4722
Received
Received - Intake
Privilege Escalation in Firefox IPC Component Before
Publication date: 2026-03-24
Last updated on: 2026-04-13
Assigner: Mozilla Corporation
Description
Description
Privilege escalation in the IPC component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mozilla | firefox | to 149.0 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
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Can you explain this vulnerability to me?
This vulnerability is a privilege escalation issue in the IPC (Inter-Process Communication) component of Firefox versions earlier than 149.
How can this vulnerability impact me? :
An attacker exploiting this vulnerability could gain elevated privileges within the affected Firefox browser, potentially allowing them to perform actions or access data beyond their normal permissions.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
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