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PatchSiren cyber security CVE debrief

CVE-2026-50685 Microsoft CVE debrief

A double free vulnerability exists in Windows DHCP Server, which could allow an authorized attacker to execute code over a network. The vulnerability has a CVSS score of 7.5 and is classified as HIGH severity. This vulnerability affects Windows DHCP Server installations and could be exploited by an authorized attacker to execute code over a network. System administrators and security teams should review the CVE record and NVD entry for more information.

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 managing Windows DHCP Server installations should be aware of this vulnerability and take necessary actions to mitigate it. This includes reviewing the CVE record and NVD entry for more information and implementing compensating controls, such as network segmentation or access controls.

Technical summary

The vulnerability is caused by a double free error in the Windows DHCP Server. An authorized attacker could exploit this vulnerability to execute code over a network. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. The vulnerability affects Windows DHCP Server installations and could be exploited by an authorized attacker to execute code over a network.

Defensive priority

High priority should be given to patching or mitigating this vulnerability, as it could allow an authorized attacker to execute code over a network.

Recommended defensive actions

  • Apply the patch provided by Microsoft
  • Review and update Windows DHCP Server configurations to ensure they are secure
  • Monitor network activity for suspicious behavior
  • Implement compensating controls, such as network segmentation or access controls
  • Review relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record was published on 2026-07-14T18:18:03.603Z and was last modified on 2026-07-21T19:55:20.847Z. The NVD entry is currently Analyzed. The evidence for this CVE is based on the NVD entry and the CVE record. The CVE record was provided by the CVE Numbering Authority and the NVD entry was provided by the National Vulnerability Database. The information provided is based on the data available up to the last modification date.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50685 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50685

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

  • CVE-2026-50685 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50685

    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.