CVE-2026-6777

Other issue in the Networking: DNS component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=2022726	Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-30/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-33/	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox:::::-:::*
	cpe:2.3:a:mozilla:thunderbird::::::::

History

No history.

Information

Published : 2026-04-21 13:16

Updated : 2026-06-17 11:01

NVD link : CVE-2026-6777

Mitre link : CVE-2026-6777

CVE.ORG link : CVE-2026-6777

JSON object : View

Products Affected

mozilla

thunderbird
firefox

CWE

CWE-20

Improper Input Validation

CWE-352

Cross-Site Request Forgery (CSRF)

CWE-400

Uncontrolled Resource Consumption

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