CVE-2026-6778

MEDIUM

Invalid pointer in the Audio/Video: Playback component

Title source: cna

Invalid pointer in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

CVSS v3 5.3

EPSS 0.0004

EPSS Percentile 13.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

CWE

CWE-476 CWE-824

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