CVE-2026-19380 (GCVE-0-2026-19380)

Vulnerability from cvelistv5 – Published: 2026-08-10 00:15 – Updated: 2026-08-10 21:11
VLAI
Title
Mullvad wireguard.sys IOCTL AdapterState reference count
Summary
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.
Severity
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
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
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
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-911 - Improper Update of Reference Count
  • CWE-664 - Improper Control of Resource Through Lifetime
Assigner
References
URL Tags
https://vuldb.com/vuln/387273 vdb-entrytechnical-description
https://vuldb.com/vuln/387273/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-19380 third-party-advisory
https://vuldb.com/submit/866726 third-party-advisory
https://drive.google.com/file/d/1LN68wxIx_2EI4IBV… exploit
Impacted products
Vendor Product Version
Mullvad wireguard.sys Affected: 0.10.1
    cpe:2.3:a:mullvad:wireguard.sys:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Raulisr00t (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.