CVE-2026-19380Mullvad wireguard.sys IOCTL AdapterState reference count
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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.
- CVSS
- 2.3 LOW (v3.1, CNA)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
- Weakness (CWE)
- CWE-911, CWE-664
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Aug 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Mullvad wireguard.sys mullvad:wireguard.sys | 0.10.1 | CNA record |
References
- https://vuldb.com/vuln/387273vdb-entry, technical-description
- https://vuldb.com/vuln/387273/ctisignature, permissions-required
- https://vuldb.com/cve/CVE-2026-19380third-party-advisory
- https://vuldb.com/submit/866726third-party-advisory
- https://drive.google.com/file/d/1LN68wxIx_2EI4IBVq13UlP4G1aqyz--x/view?usp=sharingexploit
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.