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 — 3 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 100%CVSS: 9.8Exploit: cisa kev · ssvc active · kev ransomware · Metasploit · epss top5pct · epss high · public exploitExposed: 0

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

Open Management Infrastructure (OMI) 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 PROB
100%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

September 15, 2021

Last Modified

August 10, 2026

Advisory Details (4)

Auto-updated Sep 7, 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 Security

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

Security Update Guide - Microsoft Security Response Center

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

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38647

Vendor Advisories for CVE-2021-38647(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

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 / 371× 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 1,203 total refreshes for this CVE.

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

Frequently asked(6)

What is CVE-2021-38647?
CVE-2021-38647 is a critical vulnerability published on September 15, 2021. Open Management Infrastructure (OMI) 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 August 10, 2026. 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