CVE-2026-6777

Other issue in the Networking: DNS component

Medium · published April 21, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
12.7
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00227 · 12.7th percentile
Published
2026-04-21T12:41Z
EPSS history
Timeline
  • 21 APR 12:41Z
    Other issue in the Networking: DNS component
    cvelistv5