Exploitation evidence
Known exploited · CISA KEV listed
Added 2021-11-03. Ransomware campaign use: Known.
CISA required action: Apply updates per vendor instructions.
CISA due date: 2021-11-17. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Microsoft / Azure Automation State Configuration, DSC Extension
Default status: Not specified
- affected: 2.0.0 to < DSC Agent versions: 2.71.1.25, 2.70.0.30, 3.0.0.3 (custom)
Microsoft / Azure Automation Update Management
Default status: Not specified
- affected: 1.0.0 to < OMS Agent for Linux GA v1.13.40-0 (custom)
Microsoft / Azure Diagnostics (LAD)
Default status: Not specified
- affected: 3.0.0 to < LAD v4.0.13 and LAD v3.0.135 (custom)
Microsoft / Azure Security Center
Default status: Not specified
- affected: 1.0.0 to < OMS Agent for Linux GA v1.13.40-0 (custom)
Microsoft / Azure Sentinel
Default status: Not specified
- affected: 1.0.0 to < OMS Agent for Linux GA v1.13.40-0 (custom)
Microsoft / Azure Stack Hub
Default status: Not specified
- affected: 1.0.0 to < Monitor, Update and Config Mgmnt 1.14.01 (custom)
Microsoft / Container Monitoring Solution
Default status: Not specified
- affected: 1.0.0 to < publication (custom)
Microsoft / Log Analytics Agent
Default status: Not specified
- affected: 1.0.0 to < OMS Agent for Linux GA v1.13.40-0 (custom)
Microsoft / Open Management Infrastructure
Default status: Not specified
- affected: 16.0 to < OMI Version 1.6.8-1 (custom)
Microsoft / System Center Operations Manager (SCOM)
Default status: Not specified
- affected: 1.0.0 to < OMI version: 1.6.8-1 (custom)
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38647
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38647
- http://packetstormsecurity.com/files/164694/Microsoft-OMI-Management-Interface-Authentication-Bypass.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-38647
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.99933,
"percentile": 0.9997
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.99933,
"percentile": 0.9997
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.99933,
"percentile": 0.9997
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.99933,
"percentile": 0.9997
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.99933,
"percentile": 0.9997
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.99933,
"percentile": 0.9997
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.99933,
"percentile": 0.9997
}05 Nov 2026, 06:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
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{
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"references": [
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"x_refsource_MISC",
"x_transferred"
],
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38647"
},
{
"tags": [
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"x_transferred"
],
"url": "http://packetstormsecurity.com/files/164694/Microsoft-OMI-Management-Interface-Authentication-Bypass.html"
}
],
"title": "CVE Program Container"
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{
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{
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},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2025-02-04T14:45:47.017000Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2021-11-03",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-38647"
},
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],
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],
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}
],
"timeline": [
{
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"cna": {
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},
{
"product": "Azure Automation Update Management",
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{
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},
{
"product": "Azure Diagnostics (LAD)",
"vendor": "Microsoft",
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{
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{
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{
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},
{
"product": "Azure Stack Hub",
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{
"lessThan": "Monitor, Update and Config Mgmnt 1.14.01",
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},
{
"product": "Container Monitoring Solution",
"vendor": "Microsoft",
"versions": [
{
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}
]
},
{
"product": "Log Analytics Agent",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "OMS Agent for Linux GA v1.13.40-0",
"status": "affected",
"version": "1.0.0",
"versionType": "custom"
}
]
},
{
"product": "Open Management Infrastructure",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "OMI Version 1.6.8-1",
"status": "affected",
"version": "16.0",
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}
]
},
{
"product": "System Center Operations Manager (SCOM)",
"vendor": "Microsoft",
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{
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],
"cpeApplicability": [
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},
{
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},
{
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{
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{
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},
{
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},
{
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"versionEndExcluding": "publication",
"versionStartIncluding": "1.0.0",
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},
{
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},
{
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},
{
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"versionEndExcluding": "Monitor, Update and Config Mgmnt 1.14.01",
"versionStartIncluding": "1.0.0",
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}
],
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],
"datePublic": "2021-09-14T14:00:00.000Z",
"descriptions": [
{
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"value": "Open Management Infrastructure (OMI) Remote Code Execution Vulnerability"
}
],
"metrics": [
{
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"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
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"scenarios": [
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],
"providerMetadata": {
"dateUpdated": "2026-08-10T15:10:54.154Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
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},
"references": [
{
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"tags": [
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"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38647"
}
],
"title": "Open Management Infrastructure (OMI) Remote Code Execution Vulnerability"
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},
"cveMetadata": {
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"datePublished": "2021-09-15T11:24:07.000Z",
"dateReserved": "2021-08-13T00:00:00.000Z",
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"state": "PUBLISHED"
},
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"dataVersion": "5.2"
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.99933,
"percentile": 0.9997
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.99933,
"percentile": 0.9997
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.99933,
"percentile": 0.9997
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2021-38647",
"cwes": [
"CWE-1390"
],
"dateAdded": "2021-11-03",
"dueDate": "2021-11-17",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Known",
"notes": "https://nvd.nist.gov/vuln/detail/CVE-2021-38647",
"product": "Open Management Infrastructure (OMI)",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "Microsoft Open Management Infrastructure (OMI) within Azure VM Management Extensions contains an unspecified vulnerability allowing remote code execution.",
"vendorProject": "Microsoft",
"vulnerabilityName": "Microsoft Open Management Infrastructure (OMI) Remote Code Execution Vulnerability"
}