This security advisory describes one low risk vulnerability.
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists in the MpSigStub.exe for Defender that allows arbitrary file deletion. A local user can run a specially crafted command and delete protected files on the system.
Install update from vendor's website.Vulnerable software versions
Microsoft Forefront Endpoint Protection: 2010
Microsoft Security Essentials: -
Windows Defender: for Windows 8.1, for Windows 10, Windows 10 1511, Windows 10 1607, Windows Server 2016, Windows 10 1703, for Windows RT 8.1, on Windows 7 for 32-bit Systems Service Pack 1, on Windows Server 2008, on Windows Server 2012CPE
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.