CVE-2026-4705
Received Received - Intake
Undefined Behavior in Firefox WebRTC Signaling Component

Publication date: 2026-03-24

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

Description
Undefined behavior 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
2026-06-16
AI Q&A
2026-03-24
EPSS Evaluated
2026-06-15
NVD
CVE-2026-4705
EUVD
EUVD-2026-14825
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-758 The product uses an API function, data structure, or other entity in a way that relies on properties that are not always guaranteed to hold for that entity.
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Executive Summary

This vulnerability involves undefined behavior in the WebRTC signaling component of Firefox browsers. It affects versions of Firefox earlier than 149 and Firefox ESR earlier than 140.9.

Impact Analysis

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