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CVE-2026-19380— Mullvad wireguard.sys IOCTL AdapterState reference count

Quick assessment

Affected
Mullvad wireguard.sys
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mullvad VPN desktop and mobile app是Mullvad VPN组织的一款提供加密连接的虚拟专用网络应用。 Mullvad VPN desktop and mobile app 0.10.1版本存在资源管理错误漏洞，该漏洞源于IOCTL Handler组件的AdapterState函数引用计数更新不当，可能导致资源管理错误。

CVSS 2.3 · Low EPSS 0.17% · P6

Affected Version Matrix 1

VendorProduct Version RangeStatus
Mullvad wireguard.sys 0.10.1 affected
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I. Basic Information for CVE-2026-19380

Vulnerability Information
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Vulnerability Title
Mullvad wireguard.sys IOCTL AdapterState reference count
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
引用计数的更新不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Mullvad VPN desktop and mobile app 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mullvad VPN desktop and mobile app是Mullvad VPN组织的一款提供加密连接的虚拟专用网络应用。 Mullvad VPN desktop and mobile app 0.10.1版本存在资源管理错误漏洞，该漏洞源于IOCTL Handler组件的AdapterState函数引用计数更新不当，可能导致资源管理错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Mullvad wireguard.sys 0.10.1 cpe:2.3:a:mullvad:wireguard.sys:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-19380

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III. Intelligence Information for CVE-2026-19380

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Proof of Concept for CVE-2026-19380 (1)

News Coverage for CVE-2026-19380 (2)

Other References for CVE-2026-19380 (1)

IV. Related Vulnerabilities

Same vendor: Mullvad
Same weakness: CWE-911

V. Comments for CVE-2026-19380

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