CVE-2026-4704
Received Received - Intake

Denial-of-Service in Firefox WebRTC Signaling Component

Publication date: 2026-03-24

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

Description
Denial-of-service in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

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Meta Information

Published
2026-03-24
Last Modified
2026-04-13
Generated
2026-07-26
AI Q&A
2026-03-24
EPSS Evaluated
2026-07-25
NVD
CVE-2026-4704
EUVD
EUVD-2026-14823

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 149.0 (exc)
mozilla firefox to 140.9.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

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Executive Summary

This vulnerability is a denial-of-service issue in the WebRTC signaling component of Firefox browsers. It affects versions of Firefox earlier than 149 and Firefox ESR versions earlier than 140.9.

Detection Guidance

I don't know

Impact Analysis

Exploitation of this vulnerability can cause a denial-of-service condition, potentially making the affected Firefox browser unresponsive or unavailable when using WebRTC features.

Compliance Impact

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Mitigation Strategies

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