Vulnerability identifier: #VU26871

Vulnerability risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0981

CWE-ID: CWE-254

Exploitation vector: Local

Exploit availability: No

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

Vendor: Microsoft

Description

This vulnerability allows a local user to bypass security rescritions feature.

The vulnerability exists due to Windows fails to properly handle token relationships. A local user can allow an application with a certain integrity level to execute code at a different integrity level, leading to a sandbox escape.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 1903 - 10 1909

Windows Server: 2019 1903 - 2019 1909

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0981

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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.