CVE-2021-38647: Microsoft Open Management Infrastructure (OMI) Remote Code Execution Vulnerability
Vulnerability summary
CVE-2021-38647 is a critical (CVSS 9.8) vulnerability in Microsoft Open Management Infrastructure (OMI). It is known to be exploited: CISA lists it, first on 03-11-2021. It has been used in ransomware campaigns. EPSS estimates a 99.93% chance of exploitation in the next 30 days, higher than 99.9% of scored vulnerabilities. 2 public exploits are recorded.
Timeline
- 15-09-2021PublishedVulnerability first disclosed.
- 03-11-2021Added to CISA KEVMicrosoft Open Management Infrastructure (OMI) Remote Code Execution Vulnerability
- 17-11-2021CISA remediation dueApply updates per vendor instructions.
- 10-08-2026Last modifiedVulnerability information updated.
Description
Open Management Infrastructure (OMI) Remote Code Execution Vulnerability
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
99.93%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
0.00 pp
From 99.93% on 20-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 03-11-2021
- Federal due date
- 17-11-2021
CISA required action
Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2021-38647
Public exploits
2 foundExploit Reference (packetstormsecurity.com)
Maturity: unknown
Microsoft OMI Management Interface Authentication Bypass
exploit/linux/misc/cve_2021_38647_omigod
Maturity: weaponized
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Microsoft12 products
- azure_automation_state_configurationna
- azure automation state configuration, dsc extension≥ 2.0.0, < DSC Agent versions: 2.71.1.25, 2.70.0.30, 3.0.0.3
- azure_automation_update_management≥ 1.0.0, < OMS Agent for Linux GA v1.13.40-0 | na
- azure_diagnostics_\(lad\)≥ 3.0.0, < LAD v4.0.13 and LAD v3.0.135 | na
- azure_security_center≥ 1.0.0, < OMS Agent for Linux GA v1.13.40-0 | na
1 vendor · 12 products
References
4 links
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38647X Refsource MISCX TransferredPatchVendor Advisory
- packetstormsecurity.com/files/164694/Microsoft-OMI-Management-Interface-Authentication-Bypass.htmlX Refsource MISCX TransferredExploitThird Party AdvisoryVDB Entry
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-38647Government ResourceUS Government Resource