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CVE-2026-58626 Microsoft CVE debrief

CVE-2026-58626 is a high-severity vulnerability in Windows Remote Desktop Services that allows an authorized attacker to execute code over a network. The vulnerability has a CVSS score of 8.8 and is classified as HIGH. Microsoft has released a patch for this vulnerability, and users are advised to apply it as soon as possible. The vulnerability is a use-after-free issue in Windows Remote Desktop Services. System administrators and users of Windows Remote Desktop Services should be aware of this vulnerability and take necessary precautions to protect their systems.

Vendor
Microsoft
Product
Windows 10 Version 21H2
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-22
Advisory published
2026-07-14
Advisory updated
2026-07-22

Who should care

System administrators and users of Windows Remote Desktop Services should be aware of this vulnerability and take necessary precautions to protect their systems. This includes applying the patch released by Microsoft, ensuring Windows Remote Desktop Services are up-to-date, and monitoring system logs for suspicious activity.

Technical summary

The vulnerability is a use-after-free issue in Windows Remote Desktop Services. An authorized attacker can exploit this vulnerability to execute code over a network. The vulnerability has been patched by Microsoft, and users are advised to apply the patch as soon as possible. The vulnerability affects Windows Remote Desktop Services, and system administrators should take necessary precautions to protect their systems.

Defensive priority

High

Recommended defensive actions

  • Apply the patch released by Microsoft
  • Ensure Windows Remote Desktop Services are up-to-date
  • Monitor system logs for suspicious activity
  • Implement additional security measures to protect against unauthorized access
  • Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE record was published on 2026-07-14T18:18:44.650Z and was last modified on 2026-07-17T02:31:15.360Z. The NVD entry is currently Analyzed. The vulnerability has a CVSS score of 8.8 and is classified as HIGH. Microsoft has released a patch for this vulnerability, and users are advised to apply it as soon as possible. The vulnerability affects Windows Remote Desktop Services, and an authorized attacker can exploit this vulnerability to execute code over a network.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-58626 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-58626

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

  • CVE-2026-58626 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-58626

    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.