CVE-2026-19380Public exploitHinoki check available

Local service interruption via AdapterState reference miscount

Published Aug 10, 2026 · Updated Aug 10, 2026

Improper reference counting in WireGuard LLC WireGuardNT 0.10.1 allows local users to interrupt service through AdapterState IOCTLs. The IOCTL handler's AdapterState function incorrectly updates a kernel object reference count while processing adapter state requests. Administrative local access is required, and exploitation is limited to availability impact through a driver or dependent-service interruption.

CVSS severityUnavailable
Unscored
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper reference counting in WireGuard LLC WireGuardNT 0.10.1 allows local users to interrupt service through AdapterState IOCTLs. The IOCTL handler's AdapterState function incorrectly updates a kernel object reference count while processing adapter state requests. Administrative local access is required, and exploitation is limited to availability impact through a driver or dependent-service interruption.

The record

CVE
CVE-2026-19380
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
WireGuard LLC
Product
WireGuardNT
Classifications
CWE-664, CWE-911, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.10.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

WireGuard LLC · WireGuardNTversion=0.10.1

Published CVSS scores

2.3VulDB CNACVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
1.4VulDB CNAAV:L/AC:L/Au:M/C:N/I:N/A:P/E:POC/RL:ND/RC:UR
2.3VulDB CNACVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
4.6VulDB CNACVSS: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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-664Improper Control of a Resource Through its Lifetime
CWE-911Improper Update of Reference Count
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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