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

Wed, 22 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Vendors & Products Mozilla thunderbird

Wed, 22 Apr 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-676
References
Metrics threat_severity

None

threat_severity

Moderate


Wed, 22 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 22 Apr 2026 00:00:00 +0000

Type Values Removed Values Added
Description Other issue in the Networking: DNS component. This vulnerability was fixed in Firefox 150. Other issue in the Networking: DNS component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
Weaknesses CWE-20
CWE-352
CWE-400
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}


Tue, 21 Apr 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox

Tue, 21 Apr 2026 13:15:00 +0000

Type Values Removed Values Added
Description Other issue in the Networking: DNS component. This vulnerability was fixed in Firefox 150.
Title Other issue in the Networking: DNS component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-04-21T12:41:08.452Z

Updated: 2026-04-21T23:35:12.791Z

Reserved: 2026-04-21T12:41:08.101Z

Link: CVE-2026-6777

cve-icon Vulnrichment

Updated: 2026-04-21T17:17:33.129Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-21T13:16:23.430

Modified: 2026-04-22T15:08:29.453

Link: CVE-2026-6777

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-21T12:41:08Z

Links: CVE-2026-6777 - Bugzilla