SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2022-34713

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

KEVHIGH 7.8EPSS 67.8%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 30 August 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

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

CVSS 3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
67.76% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Listed 9 August 2022 · due 30 August 2022
Affected
microsoft/windows 10 1507 · microsoft/windows 10 1607 · microsoft/windows 10 1809 · microsoft/windows 10 20h2 · microsoft/windows 10 21h1 · microsoft/windows 10 21h2 · microsoft/windows 11 21h2 · microsoft/windows 7 · microsoft/windows 8.1 · microsoft/windows rt 8.1 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016 · microsoft/windows server 2019 · microsoft/windows server 2022 · microsoft/windows server 20h2
Source
secure@microsoft.com
EPSS trend
0%35%70%30 October 2026: 67.76%30 October 202630 October 2026

EPSS 67.8% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

CISA notes

Apply updates per vendor instructions. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34713; https://nvd.nist.gov/vuln/detail/CVE-2022-34713

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.