Firefox CVE-2026-6780

| EUVD-2026-24121 HIGH
Uncontrolled Resource Consumption (CWE-400)
2026-04-21 mozilla GHSA-47f5-x8gg-g88g
Denial Of Service Mozilla
7.5
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

4
Analysis Updated
Apr 22, 2026 - 00:32 vuln.today
v2 (cvss_changed)
Re-analysis Queued
Apr 22, 2026 - 00:22 vuln.today
cvss_changed
Analysis Generated
Apr 21, 2026 - 18:24 vuln.today
CVSS changed
Apr 21, 2026 - 18:22 NVD
7.5 (HIGH)

DescriptionNVD

Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150.

AnalysisAI

Denial-of-service in Firefox's Audio/Video playback component allows remote attackers to crash the browser via network-based exploitation requiring no authentication or user interaction. Mozilla patched the vulnerability in Firefox 150. …

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RemediationAI

Within 24 hours: inventory Firefox deployment scope across endpoints and identify critical user populations. Within 7 days: upgrade all Firefox instances to version 150 or later; verify patch deployment via endpoint management tools and conduct targeted testing on audio/video workflows. …

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CVE-2026-6780 vulnerability details – vuln.today
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