CVE-2020-1509 Local Security Authority Subsystem Service Elevation of Privilege Vulnerability

What is CVE-2020-1509?

CVE-2020-1509 is a high-severity vulnerability in Microsoft Windows 10, published on 17 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An elevation of privilege vulnerability exists in the Local Security Authority Subsystem Service (LSASS) when an authenticated attacker sends a specially crafted authentication request. A remote attacker who successfully exploited this vulnerability could cause an elevation of privilege on the target system's LSASS service. The security update addresses the vulnerability by changing the way that LSASS handles specially crafted authentication requests.

Which versions are affected by CVE-2020-1509?

It affects 8 products.

Products include Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2008, Microsoft Windows Server 2012 and 2 more.

How do I fix CVE-2020-1509?

No fix has been published for CVE-2020-1509 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-1509 being exploited?

There is no known exploitation of CVE-2020-1509 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 Exploited High 8.8
• CVE-2015-1769 Microsoft Windows Mount Manager Privilege Escalation Exploited Medium 6.6
• CVE-2020-1467 Windows Hard Link Elevation of Privilege Vulnerability Critical 10.0
• CVE-2021-26424 Windows TCP/IP Remote Code Execution Vulnerability Critical 9.9
• CVE-2021-28476 Windows Hyper-V Remote Code Execution Vulnerability Critical 9.9

All Microsoft Windows 10 vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-mxf8-c4gw-pc7v.