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CVE-2026-47653 Microsoft CVE debrief

CVE-2026-47653 is a high-severity vulnerability in the Remote Desktop Client that allows an unauthorized attacker to execute code over a network. The vulnerability has a CVSS score of 8.8 and is classified as HIGH. It was published on 2026-06-09T17:17:36.753Z and modified on 2026-06-12T17:32:09.043Z.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-07-09
Advisory published
2026-06-09
Advisory updated
2026-07-09

Who should care

Administrators and users of Microsoft Remote Desktop Client are advised to take immediate action to mitigate this vulnerability.

Technical summary

The vulnerability is caused by a heap-based buffer overflow in the Remote Desktop Client. This allows an attacker to execute arbitrary code over a network. The vulnerability affects multiple versions of Windows 10, Windows 11, and Windows Server.

Defensive priority

HIGH

Recommended defensive actions

  • Apply patches and updates from Microsoft as soon as possible.
  • Use secure communication protocols and limit access to the Remote Desktop Client.
  • Monitor network activity for suspicious behavior.

Evidence notes

The vulnerability is confirmed by Microsoft and has been analyzed by the National Vulnerability Database (NVD).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-47653 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-47653

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

  • CVE-2026-47653 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-47653

    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.