Vulnerability identifier: #VU52127

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-28321

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
Visual Studio
Universal components / Libraries / Software for developers

Vendor: Microsoft

Description

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

The vulnerability exists due to application does not properly impose security restrictions in Diagnostics Hub Standard Collector Service, which leads to security restrictions bypass and privilege escalation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 1803 10.0.17134.48, 10 1809 10.0.17763.1, 10 1909 10.0.18363.476, 10 2004 10.0.19041.264, 10 20H2 10.0.19042.572

Windows Server: 2019 10.0.17763.1 - 2019 2004

Visual Studio: 15.9, 16.4.0 16.4.29519.181

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28321

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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.