CVE-2026-84408

High CVSS 8.8

Published 2026-09-16 · last changed 2026-09-16

The fix

We hold no Microsoft remediation data for CVE-2026-84408, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

QND contains an improper access control vulnerability in a named pipe, which may allow a local attacker who is logged in to a Windows PC where the affected product's client is installed to execute arbitrary commands with SYSTEM privileges.

Sources

NVD record for CVE-2026-84408

CVSS vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H