PT-2026-33963 · Mozilla · Firefox+1

CVE-2026-6777

Published

2026-04-21

Updated

2026-07-25

CVSS v3.1

5.3

Medium

Vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 150 Thunderbird versions prior to 150

Description An issue exists in the Networking: DNS component.

Recommendations Update to version 150 for Firefox. Update to version 150 for Thunderbird.

Fix

DoS

RCE

Resource Exhaustion

CSRF

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BDU:2026-06948

CVE-2026-6777

OPENSUSE-SU-2026:10626-1

OPENSUSE-SU-2026:11373-1

Firefox

Thunderbird