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CVE-2026-97789 Microsoft CVE debrief

A remote code execution vulnerability exists in the Remote Desktop Client due to a use-after-free issue. An unauthorized attacker can exploit this vulnerability to execute code over a network. This vulnerability affects Windows systems using Remote Desktop Client, particularly those with exposure to untrusted networks or users. Defenders should assess the vulnerability's impact on their organization and prioritize patching accordingly. The vulnerability's severity and potential impact necessitate immediate attention from defenders responsible for Windows systems.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-13
Original CVE updated
2026-10-14
Advisory published
2026-10-13
Advisory updated
2026-10-14

Who should care

Defenders responsible for Windows systems, particularly those using Remote Desktop Client, should assess exposure and prioritize patching. This includes IT administrators, security teams, and operators managing Windows deployments. The vulnerability's severity and potential impact necessitate immediate attention from these stakeholders to ensure the security of their systems and networks.

Why it matters

CVE-2026-97789 is a high-severity remote code execution vulnerability in the Remote Desktop Client. Defenders should prioritize patching and restrict access to trusted networks and users.

  • Potential code execution over the network
  • Requires patching of affected Windows versions
  • Restricting Remote Desktop Client access is necessary

Technical summary

The Remote Desktop Client vulnerability allows unauthorized attackers to execute code over a network due to a use-after-free issue. This vulnerability affects Windows 10, Windows 11, and Windows Server versions. The vulnerability's technical details are based on official CVE Program and NVD records, which provide a foundation for understanding the vulnerability's nature and potential impact. However, specific technical details on exploitation and affected systems are limited.

Defensive priority

Defenders should prioritize patching affected Windows versions and restrict Remote Desktop Client access to trusted networks and users.

Recommended defensive actions

  • Patch affected Windows 10, Windows 11, and Windows Server versions
  • Restrict Remote Desktop Client access to trusted networks and users
  • Monitor for suspicious Remote Desktop Client activity

Evidence notes

The CVE Program and NVD provide official records of the vulnerability. Microsoft offers a patch for affected versions. Evidence is based on CVE Program and NVD records, with limitations on source-provided details. Defenders should verify affected scope and vendor guidance through official advisories. The vulnerability's existence and severity are confirmed, but specific details on affected systems and exploitation are limited.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-97789 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-97789

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

  • CVE-2026-97789 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-97789

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

Supplemental references

  • Remote Desktop Client Remote Code Execution Vulnerability

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/97xxx/CVE-2026-97789.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97789

    Supplemental source - vendor-advisory, patch

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.