CVE-2026-19380
Mullvad wireguard.sys IOCTL AdapterState reference count
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.
INFO
Published Date :
Aug. 10, 2026, 1:16 a.m.
Last Modified :
Aug. 10, 2026, 1:16 a.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-19380
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update Mullvad wireguard.sys to a fixed version.
- Apply vendor-supplied security patches.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-19380.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-19380 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-19380
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-19380 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-19380 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 10, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:mullvad:wireguard.sys:*:*:*:*:*:*:*:*'], 'vendor': 'Mullvad', 'modules': ['IOCTL Handler'], 'product': 'wireguard.sys', 'versions': [{'status': 'affected', 'version': '0.10.1'}]}] Added 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L Added CVSS V2 (AV:L/AC:L/Au:M/C:N/I:N/A:P) Added CWE CWE-664 Added CWE CWE-911 Added Reference https://drive.google.com/file/d/1LN68wxIx_2EI4IBVq13UlP4G1aqyz--x/view?usp=sharing Added Reference https://vuldb.com/cve/CVE-2026-19380 Added Reference https://vuldb.com/submit/866726 Added Reference https://vuldb.com/vuln/387273 Added Reference https://vuldb.com/vuln/387273/cti