CVE-2019-9510 Microsoft Windows RDP can bypass the Windows lock screen
An attacker with local access to an RDP client can bypass the remote system's lock screen by triggering a network disconnect and reconnect, gaining unauthorized session access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-9510?
CVE-2019-9510 is a medium-severity authentication bypass vulnerability in Microsoft Windows 10, published on 15 Jan 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2019-9510?
It affects 2 products.
Products include Microsoft Windows 10, Microsoft Windows Server 2019.
How do I fix CVE-2019-9510?
No fix has been published for CVE-2019-9510 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2019-9510 being exploited?
There is no known exploitation of CVE-2019-9510 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10
- CVE-2015-2426 Microsoft Windows Adobe Type Manager Library Remote Code Execution
- CVE-2015-1769 Microsoft Windows Mount Manager Privilege Escalation
- CVE-2020-1467 Windows Hard Link Elevation of Privilege Vulnerability
- CVE-2021-26424 Windows TCP/IP Remote Code Execution Vulnerability
- CVE-2021-28476 Windows Hyper-V Remote Code Execution Vulnerability
Sources
Also known as GHSA-mpp6-gpg9-88j7.