Mozilla Firefox CVE-2026-6775

| EUVD-2026-24116 MEDIUM
Buffer Overflow (CWE-119)
2026-04-21 mozilla GHSA-wpg5-vr6r-jrcr
Buffer Overflow Mozilla
5.3
CVSS 3.1
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CVSS VectorNVD

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

Lifecycle Timeline

2
Analysis Generated
Apr 21, 2026 - 19:22 vuln.today
CVSS changed
Apr 21, 2026 - 19:22 NVD
5.3 (None) 5.3 (MEDIUM)

DescriptionNVD

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150.

AnalysisAI

Incorrect boundary conditions in Firefox's WebRTC component allow remote attackers to read limited memory contents without authentication. Firefox versions prior to 150 are affected by this low-confidentiality vulnerability, which CVSS rates at 5.3 due to network exploitability without user interaction, though CISA's SSVC framework indicates no current exploitation activity and limited technical impact.

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CVE-2026-6775 vulnerability details – vuln.today
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