⚠ Known Exploited Vulnerability (KEV) Tracker

Description

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 code with the privileges of the calling application.

Lifecycle Timeline

• 2022-05-29
  Public exploit code

  Metasploit — Microsoft Office Word MSDTJS

  Metasploit →
• 2022-05-30
  Vendor fix published 1 day later

  Microsoft shipped a fix for Microsoft Windows Support Diagnostic Tool (MSDT).

  MSRC →
• 2022-06-01
  CVE published 2 days later

  Entered the public CVE record.

  CVE.org →
• 2022-06-04
  EPSS flags exploitation risk 3 days later

  Entered EPSS already at 12.8%. Dated to the sampled week.

  FIRST EPSS →
• 2022-06-14
  Added to CISA KEV 10 days later

  Listed as known exploited, which starts the federal remediation clock.

  CISA KEV →
• 2022-07-05
  Federal remediation due 21 days later

  Deadline for federal civilian agencies under BOD 22-01 — now passed.

  CISA KEV
• 2024-07-25
  First national advisory 2.1 years later

  NSA — North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs

  CyberzSOC advisory index →

Each milestone comes from a different source, so gaps between them are gaps in what those sources publish, not evidence that nothing happened. EPSS history for this CVE holds 237 points from 2022-06-04, tracked daily from 2026-09-09; earlier points are weekly, which dates a spike to within a week. Peak probability 99.4% on 2026-06-20.

Published Applicability

Check whether a specific version is affected →

What each source publishes about which product versions carry this vulnerability, kept as written rather than merged. Absence here means no source has published applicability data, not that nothing is affected.

Research & News Coverage

No mentions found in monitored research blogs or news feeds.

Detection & Exploitation

Coverage across public collections only: Nuclei and OpenVAS NVT (scan); Snort and Suricata ET Open (network); Sigma and YARA (host/SIEM); Metasploit, Exploit-DB and public GitHub repositories (exploit). Absence here means nothing public was found, not that detection is impossible.
GitHub PoC repositories are collected automatically by PoC-in-GitHub (CC0) and are not vetted: some are fakes and some are malware. Treat them as evidence that code was published, not as code to run.
OpenVAS coverage derives from the Greenbone Community Feed, made available under the Open Database License (ODbL) v1.0; its individual Vulnerability Tests are licensed GNU GPL v2.

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

The vendor's own judgement about their own code, shown alongside CISA's rather than merged into it. The exploitability index is a forward-looking prediction, distinct from a CVSS severity or CISA's SSVC decision, and vendors often report observed exploitation before a CVE reaches the KEV catalog. Vendor advisory →

CISA Assessment (Vulnrichment / SSVC)

KEV Catalog Status

Listed By

Referenced in Advisories

Weaponization Timeline — Offensive & Testing Tools

No exploit-tool sightings recorded for this CVE.

Evidence tiers are explained on the About page — a merged Metasploit module is far stronger evidence than a distro package mention.

External References

CVE.org record → NVD entry → CISA KEV catalog → Microsoft MSRC advisory → FortiGuard Labs → Rapid7 AttackerKB →