Mozilla Firefox CVE-2026-6767

| EUVD-2026-24108 MEDIUM
Buffer Overflow (CWE-119)
2026-04-21 mozilla GHSA-38r2-pp9w-hfh6
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

Other issue in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.

AnalysisAI

Confidentiality compromise in Firefox NSS Libraries allows remote unauthenticated attackers to leak sensitive information over the network without user interaction. The vulnerability affects Firefox 150 and earlier, Firefox ESR 115.34 and earlier, and Firefox ESR 140.9 and earlier, and has been patched in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. …

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CVE-2026-6767 vulnerability details – vuln.today

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