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URL: https://nvd.nist.gov/vuln/detail/CVE-2026-4704

⇱ NVD - CVE-2026-4704

  1. Vulnerabilities

CVE-2026-4704 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Current 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.


View Analysis Description

Analysis Description

Denial-of-service in the WebRTC: Signaling component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.

Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=2014868 Mozilla Corporation Permissions Required 
https://www.mozilla.org/security/advisories/mfsa2026-20/ Mozilla Corporation Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2026-22/ Mozilla Corporation Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2026-23/ Mozilla Corporation
https://www.mozilla.org/security/advisories/mfsa2026-24/ Mozilla Corporation

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information 👁 cwe source acceptance level
NIST  
CWE-400 Uncontrolled Resource Consumption CISA-ADP  

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

7 change records found show changes

CVE Modified by CISA-ADP 6/17/2026 6:57:04 AM

Action Type Old Value New Value
Added SSVC 
{"timestamp":"2026-03-25T17:50:26.794152Z","id":"CVE-2026-4704","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by Mozilla Corporation 6/17/2026 6:57:04 AM

Action Type Old Value New Value
Added Affected 
[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"140.9","lessThanOrEqual":"140.*","versionType":"rpm","status":"unaffected"},{"version":"149","lessThanOrEqual":"*","versionType":"rpm","status":"unaffected"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"140.9","lessThanOrEqual":"140.*","versionType":"rpm","status":"unaffected"},{"version":"149","lessThanOrEqual":"*","versionType":"rpm","status":"unaffected"}]}]

CVE Modified by Mozilla Corporation 4/13/2026 11:17:40 AM

Action Type Old Value New Value
Changed Description 
Denial-of-service in the WebRTC: Signaling component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.


 
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.

CVE Modified by CISA-ADP 3/25/2026 3:16:52 PM

Action Type Old Value New Value
Added CVSS V3.1 
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added CWE 
CWE-400

CVE Modified by Mozilla Corporation 3/24/2026 5:16:32 PM

Action Type Old Value New Value
Changed Description 
Denial-of-service in the WebRTC: Signaling component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.


 
Denial-of-service in the WebRTC: Signaling component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.
Added Reference 
https://www.mozilla.org/security/advisories/mfsa2026-23/
Added Reference 
https://www.mozilla.org/security/advisories/mfsa2026-24/

Initial Analysis by NIST 3/24/2026 4:31:02 PM

Action Type Old Value New Value
Added CVSS V3.1 
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added CWE 
NVD-CWE-noinfo
Added CPE Configuration 
OR
 *cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* versions up to (excluding) 149.0
 *cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* versions up to (excluding) 140.9.0
Added Reference Type 
Mozilla Corporation: https://bugzilla.mozilla.org/show_bug.cgi?id=2014868 Types: Permissions Required
Added Reference Type 
Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2026-20/ Types: Vendor Advisory
Added Reference Type 
Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2026-22/ Types: Vendor Advisory

New CVE Received from Mozilla Corporation 3/24/2026 9:16:06 AM

Action Type Old Value New Value
Added Description 
Denial-of-service in the WebRTC: Signaling component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.
Added Reference 
https://bugzilla.mozilla.org/show_bug.cgi?id=2014868
Added Reference 
https://www.mozilla.org/security/advisories/mfsa2026-20/
Added Reference 
https://www.mozilla.org/security/advisories/mfsa2026-22/

Quick Info

CVE Dictionary Entry:
CVE-2026-4704
NVD Published Date:
03/24/2026
NVD Last Modified:
06/17/2026
Source:
Mozilla Corporation