Vulnerability details

CVE-2026-4704

Denial-of-service in the WebRTC: Signaling component

CVSS 3.1

7.5High

Official 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.

CVSS scores

Score	Version	Source	Vector
7.5High	3.1	CISA ADP / Vulnrichment (CISA-ADP)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`

Affected products

Vendor	Product	Versions	Source
No product information recorded.

References and advisories

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Details

Published: 2026-03-24
Last updated: 2026-04-13
State: Published
Assigner (CNA): mozilla

Exploit prediction (EPSS)

0.65%

Probability of exploitation in 30 days

51.4%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-400
Uncontrolled Resource Consumption