Microsoft Windows ServerManager Exposed Dangerous Method Local Privilege Escalation Vulnerability

July 15th, 2026
ZDI-26-417 ZDI-CAN-30003

CVE ID

CVE-2026-50311

CVSS Score

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

Affected Vendors

Microsoft

Affected Products

Windows

Vulnerability Details

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows Server. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the ServerManager WMI provider. The issue results from an exposed dangerous method. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

Additional Details

Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-50311

Disclosure Timeline

  • 2026-04-01 - Vulnerability reported to vendor
  • 2026-07-15 - Coordinated public release of advisory
  • 2026-07-15 - Advisory Updated

Credit

mad31k

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