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CVE-2026-50496 Microsoft CVE debrief

CVE-2026-50496 is an out-of-bounds read vulnerability in Windows Network Policy Server SNMP. This vulnerability allows an unauthorized attacker to disclose information over a network. The vulnerability has a CVSS score of 7.5 and a HIGH severity rating. Microsoft has released a patch for this vulnerability. System administrators and security teams should be aware of the potential for information disclosure and take steps to mitigate the vulnerability. The vulnerability affects Windows Network Policy Server SNMP installations, and defenders should review their network configurations to determine potential exposure.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-21
Advisory published
2026-07-14
Advisory updated
2026-07-21

Who should care

System administrators and security teams responsible for Windows Network Policy Server SNMP installations should be aware of this vulnerability and take steps to mitigate it. They should review their network configurations to determine potential exposure and apply the patch released by Microsoft. Additionally, they should monitor for suspicious activity and review compensating controls for exposed systems.

Technical summary

The vulnerability is caused by an out-of-bounds read in Windows Network Policy Server SNMP. This allows an attacker to disclose information over a network. The vulnerability has been patched by Microsoft. The patch addresses the out-of-bounds read vulnerability, preventing unauthorized information disclosure. However, defenders should review their network configurations and apply the patch to prevent potential exploitation.

Defensive priority

High

Recommended defensive actions

  • Apply the patch released by Microsoft
  • Review and update Windows Network Policy Server SNMP installations
  • Monitor for suspicious activity
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record was published on 2026-07-14T18:17:56.267Z and last modified on 2026-07-21T18:24:44.113Z. The NVD entry is currently Analyzed. The vulnerability has a CVSS score of 7.5 and a HIGH severity rating. Microsoft has released a patch for this vulnerability. However, the exact scope of affected systems and potential impact on various network configurations remains unclear. Defenders should verify their specific exposure and review Microsoft's advisory for detailed mitigation steps.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50496 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50496

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-50496 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50496

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.