CVE-2026-19380: Mullvad Wireguard.sys

Low severity, CVSS 2.3. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability was identified in Mullvad wireguard.sys 0.10.1. The affected element is the function AdapterState of the component IOCTL Handler. Such manipulation leads to improper update of reference count. Local access is required to approach this attack. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.

Affected products

• Mullvad Wireguard.sys: version 0.10.1 only

Published 2026-08-10. Last modified 2026-08-12.