Vulnerability identifier: #VU72235

Vulnerability risk: High

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

CVE-ID: CVE-2023-21778

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Dynamics 365 Unified Service Desk
Web applications / CRM systems

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote attacker can trick the victim to open a specially crafted file and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Dynamics 365 Unified Service Desk: 3.0 - 4.2.0.42

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External links
http://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21778

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.