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
2026-07-06
AI Q&A
2026-03-24
EPSS Evaluated
2026-07-05
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.

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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.

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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Detection Guidance

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Mitigation Strategies

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