CVE-2022-34713: Microsoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution Vulnerability

Is it exploited?

Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 9 Aug 2022, the same day the CVE record was published.

How likely is exploitation in the next 30 days?

67.8%

EPSS score, percentile 99.3 of all scored records

How severe?

7.8 High

CVSS v3.1 base score, given by the CNA

What should I do?

Required action (CISA), due 30 Aug 2022: Apply updates per vendor instructions.

Advisories and patches (1)

Which versions are affected?

Affected: 10.0.17763.0 up to, not including, 10.0.17763.3287; 10.0.0 up to, not including, 10.0.17763.3287; 10.0.17763.0 up to, not including, 10.0.17763.3287; 10.0.17763.0 up to, not including, 10.0.17763.3287; 10.0.0 up to, not including, 10.0.19043.1889; 10.0.20348.0 up to, not including, 10.0.20348.887; 10.0.0 up to, not including, 10.0.19042.1889; 10.0.0 up to, not including, 10.0.19042.1889; 10.0.0 up to, not including, 10.0.22000.856; 10.0.19043.0 up to, not including, 10.0.19044.1889; 10.0.10240.0 up to, not including, 10.0.10240.19387; 10.0.14393.0 up to, not including, 10.0.14393.5291; 10.0.14393.0 up to, not including, 10.0.14393.5291; 10.0.14393.0 up to, not including, 10.0.14393.5291; 6.1.0 up to, not including, 6.1.7601.26065; 6.1.0 up to, not including, 6.1.7601.26065; 6.3.0 up to, not including, 6.3.9600.20520; 6.1.7601.0 up to, not including, 6.1.7601.26065; 6.1.7601.0 up to, not including, 6.1.7601.26065; 6.2.9200.0 up to, not including, 6.2.9200.23817

Versions by product

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

What to do

CISA due date for this action: 30 August 2022.

Advisories and patches

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

Linked from CISA's catalog entry

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34713
• https://nvd.nist.gov/vuln/detail/CVE-2022-34713

Affected products and versions

As listed in the CVE record.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

About this vulnerability

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

Summary: CISA's KEV catalog, as of 28 Oct 2026.

• CISA added CVE-2022-34713 to its Known Exploited Vulnerabilities (KEV) catalog on 9 Aug 2022.
• CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
• The due date CISA sets for the required action is 30 Aug 2022.
• The CVE record was published on 9 Aug 2022, the same day it was added to KEV.
• The CVE record carries a CVSS v3.1 base score of 7.8 (High), given by its CNA.
• FIRST's EPSS model puts the probability of exploitation in the next 30 days at 67.8% (percentile 99.3), as of 28 Oct 2026.
• CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact total.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.

Description

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

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

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

Timeline

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