This security advisory describes one medium risk vulnerability.
The vulnerability allows a local to escalate privileges on the system.
The vulnerability exists due to the way splwow64.exe handles certain calls. A local user can abuse this functionality to elevate privileges on an affected system from low-integrity to medium-integrity.
Note, this vulnerability is being actively exploited in the wild.
Install updates from vendor's website.Vulnerable software versions
Windows: 8.1, 10, 10 1607, 10 1703, 10 1709, 10 1803, 10 1809, 10 1903, RT 8.1
Windows Server: 1803, 1903, 2012, 2012 R2, 2016, 2019CPE
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?
Yes. This vulnerability is being exploited in the wild.