CVE-2026-6777

MEDIUM

Other issue in the Networking: DNS component

Title source: cna
STIX 2.1

Description

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

References (3)

Scores

CVSS v3 5.3
EPSS 0.0006
EPSS Percentile 17.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-20 CWE-352 CWE-400
Status published
Products (4)
mozilla/firefox < 150.0
Mozilla/Firefox 150
mozilla/thunderbird < 150.0
Mozilla/Thunderbird 150
Published Apr 21, 2026
Tracked Since Apr 21, 2026