CVE-2022-30190VulnerabilityPublished 06/14/2022Updated 10/24/2026

CVE-2022-30190: Microsoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution Vulnerability

Affects Microsoft WindowsSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 06/14/2022
KEV deadline: 07/05/2022
Ransomware: Used in ransomware campaigns
EPSS: 99.2% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2022-30190 (opens in a new tab)

Description

CVE-2022-30190 is a remote code execution vulnerability in the Microsoft Windows Support Diagnostic Tool (MSDT). It occurs when MSDT is invoked via the URL protocol from a calling application such as Microsoft Word. Successful exploitation allows an attacker to execute arbitrary code with the privileges of the calling application. This vulnerability has been exploited in the wild and is known to be used in ransomware campaigns.

Summary

This vulnerability arises from the way MSDT handles calls made through the URL protocol handler from applications like Word. An attacker can craft a malicious document or link that triggers MSDT to execute arbitrary code under the context of the calling application, potentially leading to remote code execution. The vulnerability is identified as CVE-2022-30190 and is associated with CWE-610 (Improper Restriction of XML External Entity Reference).

Impact

An attacker who successfully exploits this vulnerability can execute arbitrary code with the privileges of the calling application, which could lead to full system compromise depending on the application's privileges. The vulnerability has been actively exploited in the wild and is associated with known ransomware campaigns, indicating a significant real-world impact.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should exercise caution when opening documents or links from untrusted sources to reduce the risk of exploitation.

Weaknesses

CWE-610Unclassified weakness (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 12:05:06 UTC

Weaknesses

References

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