MSRC_CVE-2026-47654

Vulnerability from csaf_microsoft - Published: 2026-06-09 07:00 - Updated: 2026-06-09 07:00
Summary
Remote Desktop Client Remote Code Execution Vulnerability
Severity
Critical
Notes
Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
Customer Action: Required. The vulnerability documented by this CVE requires customer action to resolve.
CWE-416 - Use After Free
Affected products
Product Identifier Version Remediation
Windows Server 2016 10.0.14393.9234
Windows Server 2016
10.0.14393.9234
Windows Server 2016 (Server Core installation) 10.0.14393.9234
Windows Server 2016 (Server Core installation)
10.0.14393.9234
Windows Server 2019 10.0.17763.8880
Windows Server 2019
10.0.17763.8880
Windows Server 2019 (Server Core installation) 10.0.17763.8880
Windows Server 2019 (Server Core installation)
10.0.17763.8880
Windows Server 2022 10.0.20348.5256
Windows Server 2022
10.0.20348.5256
Windows Server 2022 (Server Core installation) 10.0.20348.5256
Windows Server 2022 (Server Core installation)
10.0.20348.5256
Windows Server 2025 10.0.26100.32995
Windows Server 2025
10.0.26100.32995
Windows Server 2025 (Server Core installation) 10.0.26100.32995
Windows Server 2025 (Server Core installation)
10.0.26100.32995
Product Identifier Version Remediation
Windows Server 2025 (Server Core installation) <10.0.26100.32995
Windows Server 2025 (Server Core installation)
<10.0.26100.32995
Vendor Fix fix
Windows Server 2025 <10.0.26100.32995
Windows Server 2025
<10.0.26100.32995
Vendor Fix fix
Windows Server 2022 (Server Core installation) <10.0.20348.5256
Windows Server 2022 (Server Core installation)
<10.0.20348.5256
Vendor Fix fix
Windows Server 2022 <10.0.20348.5256
Windows Server 2022
<10.0.20348.5256
Vendor Fix fix
Windows Server 2019 (Server Core installation) <10.0.17763.8880
Windows Server 2019 (Server Core installation)
<10.0.17763.8880
Vendor Fix fix
Windows Server 2019 <10.0.17763.8880
Windows Server 2019
<10.0.17763.8880
Vendor Fix fix
Windows Server 2016 (Server Core installation) <10.0.14393.9234
Windows Server 2016 (Server Core installation)
<10.0.14393.9234
Vendor Fix fix
Windows Server 2016 <10.0.14393.9234
Windows Server 2016
<10.0.14393.9234
Vendor Fix fix
Threats
Impact Remote Code Execution
Exploit Status Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely
Acknowledgments
ʌ!ɔ⊥ojv

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        "title": "Additional Resources"
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        "name": "Use After Free"
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          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "Successful exploitation of this vulnerability requires an attacker to win a race condition.",
          "title": "According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "In the case of a Remote Desktop connection, an attacker with control of a Remote Desktop Server could trigger a remote code execution (RCE) on the machine when a victim connects to the attacking server with the vulnerable Remote Desktop Client.",
          "title": "How could an attacker exploit this vulnerability?"
        }
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "remediationLevel": "TEMPORARY_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.6,
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:T/RC:C",
            "version": "3.1"
          },
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            "2",
            "3",
            "4",
            "5",
            "6",
            "7",
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      "threats": [
        {
          "category": "impact",
          "details": "Remote Code Execution"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely"
        }
      ],
      "title": "Remote Desktop Client Remote Code Execution Vulnerability"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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