CVE-2026-4704
Denial-of-service in the WebRTC: Signaling component
HIGH
7.5
CVSS Score
Published: March 24, 2026 at 12:30 PM UTC
Updated: June 17, 2026 at 10:57 AM UTC
1 product affected across 1 vendorFirefox
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Severity
HIGH7.5
Exploit prediction
EPSS 0.7%
SSVC
No known exploit
Description
Denial-of-service in the WebRTC: Signaling component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (5)
Source: cverecord
https://www.mozilla.org/security/advisories/mfsa2026-23/Source: cverecord
https://www.mozilla.org/security/advisories/mfsa2026-24/SSVC — Action Prioritization
SSVCNo known exploitAutomatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.5HIGHCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfoCWE-400
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