CVE-2021-38647

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 100%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Open Management Infrastructure Remote Code Execution Vulnerability

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS
100.0%
KEV
⚠ Exploited

Published

September 15, 2021

Last Modified

October 30, 2025

Advisory Details (3)

Auto-updated Jun 1, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: microsoft, cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-38647
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38647
generic

Packet Storm

http://packetstormsecurity.com/files/164694/Microsoft-OMI-Management-Interface-Authentication-Bypass.html

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 86× in last 7d / 375× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 657 total refreshes for this CVE.

  1. 2026-07-23 02:03 UTCEG score recompute
  2. 2026-07-22 23:26 UTCEG score recompute
  3. 2026-07-22 23:26 UTCVendor advisory
  4. 2026-07-22 23:26 UTCGHSA enrichment
  5. 2026-07-22 22:50 UTCEG score recompute
  6. 2026-07-22 19:40 UTCCISA KEV update
  7. 2026-07-22 19:33 UTCGHSA enrichment
  8. 2026-07-22 15:39 UTCVendor advisory
  9. 2026-07-22 15:39 UTCGHSA enrichment
  10. 2026-07-22 11:45 UTCVendor advisory
  11. 2026-07-22 11:45 UTCGHSA enrichment
  12. 2026-07-22 07:52 UTCVendor advisory
  13. 2026-07-22 07:52 UTCGHSA enrichment
  14. 2026-07-22 03:59 UTCVendor advisory
  15. 2026-07-22 03:59 UTCGHSA enrichment
  16. 2026-07-21 23:59 UTCVendor advisory
  17. 2026-07-21 23:59 UTCGHSA enrichment
  18. 2026-07-21 18:06 UTCVendor advisory
  19. 2026-07-21 18:06 UTCGHSA enrichment
  20. 2026-07-21 14:37 UTCCISA KEV update
  21. 2026-07-21 14:11 UTCVendor advisory
  22. 2026-07-21 14:11 UTCGHSA enrichment
  23. 2026-07-21 10:18 UTCVendor advisory
  24. 2026-07-21 10:18 UTCGHSA enrichment
  25. 2026-07-21 06:24 UTCVendor advisory
Show 75 more
  1. 2026-07-21 06:24 UTCGHSA enrichment
  2. 2026-07-21 02:30 UTCVendor advisory
  3. 2026-07-21 02:30 UTCGHSA enrichment
  4. 2026-07-20 22:36 UTCVendor advisory
  5. 2026-07-20 22:36 UTCGHSA enrichment
  6. 2026-07-20 18:42 UTCVendor advisory
  7. 2026-07-20 18:42 UTCGHSA enrichment
  8. 2026-07-20 14:49 UTCGHSA enrichment
  9. 2026-07-20 10:39 UTCGHSA enrichment
  10. 2026-07-20 06:46 UTCVendor advisory
  11. 2026-07-20 06:46 UTCGHSA enrichment
  12. 2026-07-20 02:26 UTCVendor advisory
  13. 2026-07-20 02:26 UTCGHSA enrichment
  14. 2026-07-19 22:32 UTCVendor advisory
  15. 2026-07-19 22:32 UTCGHSA enrichment
  16. 2026-07-19 18:40 UTCVendor advisory
  17. 2026-07-19 18:40 UTCGHSA enrichment
  18. 2026-07-19 14:46 UTCVendor advisory
  19. 2026-07-19 14:46 UTCGHSA enrichment
  20. 2026-07-19 10:53 UTCVendor advisory
  21. 2026-07-19 10:53 UTCGHSA enrichment
  22. 2026-07-19 07:00 UTCVendor advisory
  23. 2026-07-19 07:00 UTCGHSA enrichment
  24. 2026-07-19 03:07 UTCVendor advisory
  25. 2026-07-19 03:06 UTCGHSA enrichment
  26. 2026-07-18 23:13 UTCGHSA enrichment
  27. 2026-07-18 19:21 UTCVendor advisory
  28. 2026-07-18 19:20 UTCGHSA enrichment
  29. 2026-07-18 15:26 UTCVendor advisory
  30. 2026-07-18 15:26 UTCGHSA enrichment
  31. 2026-07-18 11:32 UTCVendor advisory
  32. 2026-07-18 11:32 UTCGHSA enrichment
  33. 2026-07-18 07:39 UTCVendor advisory
  34. 2026-07-18 07:39 UTCGHSA enrichment
  35. 2026-07-18 03:46 UTCVendor advisory
  36. 2026-07-18 03:46 UTCGHSA enrichment
  37. 2026-07-17 23:53 UTCVendor advisory
  38. 2026-07-17 23:53 UTCGHSA enrichment
  39. 2026-07-17 20:00 UTCVendor advisory
  40. 2026-07-17 20:00 UTCGHSA enrichment
  41. 2026-07-17 16:07 UTCVendor advisory
  42. 2026-07-17 16:07 UTCGHSA enrichment
  43. 2026-07-17 12:14 UTCVendor advisory
  44. 2026-07-17 12:14 UTCGHSA enrichment
  45. 2026-07-17 08:20 UTCEG score recompute
  46. 2026-07-17 08:20 UTCVendor advisory
  47. 2026-07-17 08:20 UTCGHSA enrichment
  48. 2026-07-17 04:25 UTCVendor advisory
  49. 2026-07-17 04:25 UTCGHSA enrichment
  50. 2026-07-17 00:31 UTCVendor advisory
  51. 2026-07-17 00:31 UTCGHSA enrichment
  52. 2026-07-16 20:39 UTCVendor advisory
  53. 2026-07-16 20:39 UTCGHSA enrichment
  54. 2026-07-16 17:04 UTCCISA KEV update
  55. 2026-07-16 16:45 UTCGHSA enrichment
  56. 2026-07-16 12:49 UTCVendor advisory
  57. 2026-07-16 12:49 UTCGHSA enrichment
  58. 2026-07-16 08:56 UTCVendor advisory
  59. 2026-07-16 08:56 UTCGHSA enrichment
  60. 2026-07-16 05:03 UTCVendor advisory
  61. 2026-07-16 05:03 UTCGHSA enrichment
  62. 2026-07-16 01:09 UTCGHSA enrichment
  63. 2026-07-15 21:16 UTCVendor advisory
  64. 2026-07-15 21:16 UTCGHSA enrichment
  65. 2026-07-15 17:23 UTCVendor advisory
  66. 2026-07-15 17:22 UTCGHSA enrichment
  67. 2026-07-15 16:49 UTCCISA KEV update
  68. 2026-07-15 15:04 UTCCISA KEV update
  69. 2026-07-15 13:29 UTCVendor advisory
  70. 2026-07-15 13:28 UTCGHSA enrichment
  71. 2026-07-15 09:35 UTCVendor advisory
  72. 2026-07-15 09:35 UTCGHSA enrichment
  73. 2026-07-15 05:41 UTCVendor advisory
  74. 2026-07-15 05:41 UTCGHSA enrichment
  75. 2026-07-15 01:48 UTCGHSA enrichment

Publicly available exploits

(9 references)

Working exploit code is in the public domain (1 Metasploit module) (7 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCAlteredSecurity/CVE-2021-38647
    First seen Sep 20, 2021

    CVE-2021-38647 - POC to exploit unauthenticated RCE #OMIGOD

    Open source ↗
  • GitHub PoCSimenBai/CVE-2021-38647-POC-and-Demo-environment
    First seen Sep 19, 2021

    OMIGod / CVE-2021-38647 POC and Demo environment

    Open source ↗
  • GitHub PoCmarcosimioni/omigood
    First seen Sep 16, 2021

    OMIGOD! OM I GOOD? A free scanner to detect VMs vulnerable to one of the "OMIGOD" vulnerabilities discovered by Wiz's threat research team, specifically CVE-2021-38647.

    Open source ↗
  • GitHub PoCImmersive-Labs-Sec/cve-2021-38647
    First seen Sep 16, 2021

    A PoC exploit for CVE-2021-38647 RCE in OMI

    Open source ↗
  • GitHub PoChorizon3ai/CVE-2021-38647
    First seen Sep 16, 2021

    Proof on Concept Exploit for CVE-2021-38647 (OMIGOD)

    Open source ↗
  • GitHub PoCmidoxnet/CVE-2021-38647
    First seen Sep 15, 2021

    CVE-2021-38647 POC for RCE

    Open source ↗
  • GitHub PoCcorelight/CVE-2021-38647
    First seen Sep 15, 2021

    CVE-2021-38647 AKA "OMIGOD" vulnerability in Windows OMI

    Open source ↗
  • Metasploitexploit/linux/misc/cve_2021_38647_omigod✓ verified
    First seen Sep 14, 2021

    Microsoft OMI Management Interface Authentication Bypass

    Open source ↗
  • Nucleihttp/cves/2021/CVE-2021-38647.yaml
    First seen Jan 1, 2021

    Microsoft Open Management Infrastructure - Remote Code Execution

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2021-38647?
CVE-2021-38647 is a critical vulnerability published on September 15, 2021. Open Management Infrastructure Remote Code Execution Vulnerability
When was CVE-2021-38647 disclosed?
CVE-2021-38647 was first published in the National Vulnerability Database on September 15, 2021, with the most recent update on October 30, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-38647 actively exploited?
Yes. CISA added CVE-2021-38647 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Microsoft Open Management Infrastructure (OMI). KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2021-38647?
CVE-2021-38647 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2021-38647?
CVE-2021-38647 affects Microsoft Open Management Infrastructure (OMI). The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2021-38647?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-38647, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2021-38647

Explore →

Is Your Infrastructure Affected by CVE-2021-38647?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs