CVE-2026-19380

LOW 2.3

Mullvad wireguard.sys IOCTL AdapterState reference count

CVSS Score

2.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-911 CWE-664
Vendor	mullvad
Product	wireguard.sys
Published	Aug 10, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Mullvad / wireguard.sys

0.10.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/387273 vuldb.com: https://vuldb.com/vuln/387273/cti vuldb.com: https://vuldb.com/cve/CVE-2026-19380 vuldb.com: https://vuldb.com/submit/866726 drive.google.com: https://drive.google.com/file/d/1LN68wxIx_2EI4IBVq13UlP4G1aqyz--x/view?usp=sharing

Credits

🔍 Raulisr00t (VulDB User) VulDB CNA Team