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CVE-2019-9510

5.3 · MEDIUM

A vulnerability in Microsoft Windows 10 1803 and Windows Server 2019 and later systems can allow authenticated RDP-connected clients to gain access to user sessions without needing to interact with…

Published Jan 15, 2020CWE-288EPSS 1.32%

Overview

CVE-2019-9510 is a medium-severity vulnerability. It was published on January 15, 2020 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A vulnerability in Microsoft Windows 10 1803 and Windows Server 2019 and later systems can allow authenticated RDP-connected clients to gain access to user sessions without needing to interact with the Windows lock screen. Should a network anomaly trigger a temporary RDP disconnect, Automatic Reconnection of the RDP session will be restored to an unlocked state, regardless of how the remote system was left. By interrupting network connectivity of a system, an attacker with access to a system being used as a Windows RDP client can gain access to a connected remote system, regardless of whether or not the remote system was locked. This issue affects Microsoft Windows 10, version 1803 and later, and Microsoft Windows Server 2019, version 2019 and later.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refdocs.microsoft.com/en-us/openspecs/windows_protocols/ms-rdpbcgr/e729948a-3f4e-4568-9aef-d355e30b5389Refdocs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc732713%28v=ws.11%29Refsocial.technet.microsoft.com/Forums/windowsserver/en-US/1fd171de-a1b5-4721-86bf-082e4a375049/rds-2019-but-probably-other-versions-as-well-locked-rdp-session-logs-in-after-session-reconnectRefwww.kb.cert.org/vuls/id/576688/Refdocs.microsoft.com/en-us/openspecs/windows_protocols/ms-rdpbcgr/e729948a-3f4e-4568-9aef-d355e30b5389Refdocs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc732713%28v=ws.11%29Refsocial.technet.microsoft.com/Forums/windowsserver/en-US/1fd171de-a1b5-4721-86bf-082e4a375049/rds-2019-but-probably-other-versions-as-well-locked-rdp-session-logs-in-after-session-reconnectRefwww.kb.cert.org/vuls/id/576688/

How CyberStrike helps

Frequently asked questions

What is CVE-2019-9510?

CVE-2019-9510 is a medium-severity vulnerability. It was published on January 15, 2020 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2019-9510?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-9510?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-9510?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-9510 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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