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

Added to KEV
2022-08-09
Federal due date
2022-08-30
Vendor
Microsoft
Product
Windows
EPSS
89.3th percentile (score 0.045, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2022-34713

CISA short description

A remote code execution vulnerability exists when Microsoft Windows MSDT is called using the URL protocol from a 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.