CVE-2026-50470: Microsoft Windows Network Policy Server SNMP out-of-bounds read

CVE-2026-50470 · Severity: high · CVSS 7.5 · Published 2026-07-14

A security vulnerability exists in the Windows Network Policy Server, a component used to manage network access and authentication. An unauthorized attacker could exploit this flaw over the network to access sensitive information that should be protected. This could lead to the exposure of internal system data or configuration details, potentially aiding further attacks against the corporate network.

Technologies: Microsoft Windows 10 Version 1607, Microsoft Windows 10 Version 1809, Microsoft Windows 10 Version 21H2, Microsoft Windows 10 Version 22H2, Microsoft Windows 11 Version 24H2, Microsoft Windows 11 Version 25H2, Microsoft Windows 11 Version 26H1, Microsoft Windows Server 2012. Vendors: Microsoft.

Quick answers

Is CVE-2026-50470 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-50470 being exploited in the wild.
How severe is CVE-2026-50470?
High severity, with a CVSS score of 7.5, published 14 July 2026.
Which products and versions are affected?
Microsoft Windows 10 Version 1607 10.0.14393.0 to 10.0.14393.9339; Microsoft Windows 10 Version 1809 10.0.17763.0 to 10.0.17763.9020; 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; and 4 more.
Is there a fix for CVE-2026-50470?
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-2026-50470 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2026-50470?
Check whether you run Microsoft Windows 10 Version 1607, Microsoft Windows 10 Version 1809, Microsoft Windows 10 Version 21H2 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 the SNMP implementation of the Windows Network Policy Server (NPS). The flaw is triggered when the component improperly handles memory boundaries during the processing of specially crafted SNMP requests. An unauthenticated attacker can exploit this over the network without user interaction to read memory contents, leading to information disclosure. Microsoft has released security updates to address this issue across affected Windows and Windows Server versions.

Affected products

  • Microsoft Windows 10 Version 1607 10.0.14393.0 to 10.0.14393.9339
  • Microsoft Windows 10 Version 1809 10.0.17763.0 to 10.0.17763.9020
  • 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 2012 6.2.9200.0 to 6.2.9200.26226

Timeline

  • 2026-07-14: disclosed: Initial publication by Microsoft and NVD
  • 2026-07-14: patched: Security updates released by Microsoft

References

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