Vulnerability identifier: #VU25243

Vulnerability risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0739

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Windows
Operating systems & Components / Operating system
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists in the way that the dssvc.dll handles file creation allowing for a file overwrite or creation in a secured location. A local user can run a specially crafted application to execute code with elevated permissions.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 - 10 1909

Windows Server: 2016 - 2019 1909

---

External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0739

---

Q & A

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.