known ransomware use

Microsoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution Vulnerability

Added to KEV
2022-06-14
Federal due date
2022-07-05
Vendor
Microsoft
Product
Windows
EPSS
99.8th percentile (score 0.936, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Known
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2022-30190

CISA short description

A remote code execution vulnerability exists when MSDT is called using the URL protocol from a calling application such as Word. An attacker who successfully exploits this vulnerability can run code with the privileges of the calling application.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.