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CVE

CVE-2022-30190

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

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 arbitrary code with the privileges of the calling application. The attacker can then install programs, view, change, or delete data, or create new accounts in the context allowed by the user’s rights.

Please see the MSRC Blog Entry for important information about steps you can take to protect your system from this vulnerability.

HIGH · CVSS 7.8 ⚠ CISA KEV EPSS 0.93596 Ransomware: known
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • Linked to known ransomware campaigns
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0

Required Remediation

Apply updates per vendor instructions.

Threat Actors Linked

24

Affected Products & Versions

16
microsoft windows 10 1507< 10.0.10240.19325
microsoft windows 10 1607< 10.0.14393.5192
microsoft windows 10 1809< 10.0.17763.3046
microsoft windows 10 20h2< 10.0.19042.1766
microsoft windows 10 21h1< 10.0.19043.1766
microsoft windows 10 21h2< 10.0.19044.1766

Public Exploits & PoCs

1

Detection Rules (IDS/IPS)

2
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.

Sigma Hunt Rules

7
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
exacthighExecute Pcwrun.EXE To Leverage Follina
exacthighPotential Arbitrary Command Execution Using Msdt.EXE
exacthighSuspicious MSDT Parent Process
exacthighSdiagnhost Calling Suspicious Child Process
exacthighDiagnostic Library Sdiageng.DLL Loaded By Msdt.EXE
exactmediumTroubleshooting Pack Cmdlet Execution

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Jun 2022 · 08:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

Vendor Advisories

8
msrcCVE-2022-30190Remote Code Execution
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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