CVE-2026-50682: Microsoft Windows Active Directory out-of-bounds read

CVE-2026-50682 · Severity: high · CVSS 7.1 · Published 2026-07-14

A security vulnerability has been identified in Windows Active Directory, the service responsible for managing users and permissions across a corporate network. An authorized user on the network could exploit this flaw to cause a denial-of-service, potentially disrupting authentication and access to company resources. This could lead to operational downtime as critical identity services become unavailable.

Technologies: Microsoft Windows 11, Microsoft Windows 10, Microsoft Windows Server 2022, Microsoft Windows Server 2025. Vendors: Microsoft.

Quick answers

Is CVE-2026-50682 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-50682 being exploited in the wild.
How severe is CVE-2026-50682?
High severity, with a CVSS score of 7.1, published 14 July 2026.
Which products and versions are affected?
Microsoft Windows 11 10.0.26100.0 to 10.0.26100.8875; Microsoft Windows 10 10.0.19044.0 to 10.0.19044.7548; Microsoft Windows Server 2022 10.0.20348.0 to 10.0.20348.5386; Microsoft Windows Server 2025 10.0.26100.0 to 10.0.26100.33158.
Is there a fix for CVE-2026-50682?
A patch was published on 2026-07-14: Security updates released by Microsoft Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-50682 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2026-50682?
Check whether you run Microsoft Windows 11, Microsoft Windows 10, Microsoft Windows Server 2022 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An out-of-bounds read vulnerability (CWE-125) exists in Windows Active Directory. The flaw is triggered when the service improperly handles memory during the processing of specific network requests. An authenticated attacker with low privileges can exploit this over the network to cause a denial-of-service (DoS) condition or potentially read limited sensitive information from memory. Microsoft has released security updates to address this issue across affected versions of Windows 10, 11, and Windows Server.

Affected products

  • Microsoft Windows 10 Version 21H2 10.0.19044.0 to 10.0.19044.7548
  • Microsoft Windows 10 Version 22H2 10.0.19045.0 to 10.0.19045.7548
  • Microsoft Windows 11 Version 24H2 10.0.26100.0 to 10.0.26100.8875
  • Microsoft Windows 11 Version 25H2 10.0.26200.0 to 10.0.26200.8875
  • Microsoft Windows 11 version 26H1 10.0.28000.0 to 10.0.28000.2269
  • Microsoft Windows Server 2022 10.0.20348.0 to 10.0.20348.5386
  • Microsoft Windows Server 2025 10.0.26100.0 to 10.0.26100.33158

Timeline

  • 2026-07-14: advisory: Initial disclosure by Microsoft and NVD
  • 2026-07-14: patched: Security updates released by Microsoft

References

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