CVE-2026-50311

SYSTEM code execution via exposed ServerManager WMI method

Published Jul 14, 2026 · Updated Jul 14, 2026

Improper access control in Microsoft Windows allows local users to execute arbitrary code as SYSTEM through the ServerManager WMI provider. The provider exposes a dangerous WMI method to low-privileged callers instead of enforcing access restrictions before invocation. Exploitation requires the ability to run low-privileged code locally and grants complete SYSTEM-context control of the affected host.

CVSS severity7.8
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Microsoft Windows allows local users to execute arbitrary code as SYSTEM through the ServerManager WMI provider. The provider exposes a dangerous WMI method to low-privileged callers instead of enforcing access restrictions before invocation. Exploitation requires the ability to run low-privileged code locally and grants complete SYSTEM-context control of the affected host.

The record

CVE
CVE-2026-50311
Published
Jul 14, 2026
Updated
Jul 14, 2026
Vendor
Microsoft
Product
Windows Server 2019
Classifications
CWE-284, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=10.0.17763.0 <10.0.17763.9020

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.9020
Microsoft · Windows Server 2025 (Server Core installation)version=10.0.26100.0 <10.0.26100.33158
Microsoft · Windows 11, version 25H2version=10.0.26200.0 <10.0.26200.8875
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.9339
Microsoft · Windows 11, version 24H2version=10.0.26100.0 <10.0.26100.8875
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.26226
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.26226
Microsoft · Windows 10 Version 21H2version=10.0.19044.0 <10.0.19044.7548
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.9339
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.7548
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.23291
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.9020
Microsoft · Windows 11, version 26H1version=10.0.28000.0 <10.0.28000.2269
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.9339
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.5386
Microsoft · Windows Server 2025version=10.0.26100.0 <10.0.26100.33158
Microsoft · Windows 10 Version 1809version=10.0.17763.0 <10.0.17763.9020
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.23291

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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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