What’s Vulnerable › Vulnerabilities

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

• Severity: low (CVSS 2.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-10 · updated 2026-10-23
• Weakness: CWE-664

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.

Affected products

• Mullvad wireguard.sys: 0.10.1

References

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

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