#VU50507 Permissions, Privileges, and Access Controls in PsExec - CVE-2021-1733

Vulnerability identifier: #VU50507

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-1733

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
PsExec
Web applications / Modules and components for CMS

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 PsExec, which leads to security restrictions bypass and privilege escalation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

PsExec: All versions

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1733

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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.