Input validation error in Microsoft Exchange Server - CVE-2022-21969

Vulnerability identifier: #VU59410

CSH Severity: Medium

CVSS v4: 9.4 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H]

CVE-ID: CVE-2022-21969

CWE-ID: CWE-20

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

The vulnerability allows a remote user to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote user on the local network can send specially crafted data to the Exchange server and execute arbitrary code on the system.

Microsoft Exchange Server

Install updates from vendor's website.

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21969

• Multiple vulnerabilities in Microsoft Exchange Server