CVE-2026-19380
Mullvad wireguard.sys IOCTL AdapterState reference count
- State
- Published
- Severity
- 4.6 Medium
- Published
- Aug 10, 2026
- Updated
- Aug 10, 2026
- Reserved
- Aug 9, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.6 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 2.3 Low | 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 | VulDB |
| 3.0 | 2.3 Low | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 1.4 Low | AV:L/AC:L/Au:M/C:N/I:N/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
wireguard.sysMullvad |
|
References
- VDB-387273 | Mullvad wireguard.sys IOCTL AdapterState reference countvdb-entrytechnical-description
- VDB-387273 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-19380 | CVE Analysis and Reportthird-party-advisory
- Submit #866726 | Mullvad wireguard.sys 0.10.1 Denial of Servicethird-party-advisory
- https://drive.google.com/file/d/1LN68wxIx_2EI4IBVq13UlP4G1aqyz--x/view?usp=sharingexploit
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