BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2021
CVE-2021-38649High confidence

Microsoft Open Management Infrastructure (OMI) Privilege Escalation Vulnerability

Microsoft · Open Management Infrastructure (OMI)

7.0HighCVSS 3.1
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2021-11-17 as the remediation due date.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 3 Nov 2021

Evidence used

  • CISA confirms exploitation in the wild.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 2.89% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Microsoft Open Management Infrastructure (OMI) and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2021-25088

CISA KEV mirrored by ENISA

Open Management Infrastructure Elevation of Privilege Vulnerability

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 3 Nov 2021. Evidence sources: cisa_kev.
ENISA score
7.0 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2021-11-17 as the remediation due date.

Patch available
01

What, why and how

Microsoft Open Management Infrastructure (OMI) within Azure VM Management Extensions contains an unspecified vulnerability allowing privilege escalation.

What

Microsoft Open Management Infrastructure (OMI) within Azure VM Management Extensions contains an unspecified vulnerability allowing privilege escalation.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

What

Microsoft Open Management Infrastructure (OMI) within Azure VM Management Extensions contains an unspecified vulnerability allowing privilege escalation.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2021-11-03.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → vulnerable operation → gain additional privileges
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration.
CWE not yet assigned
CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
Privilege escalationCISA KEV
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2021-25088Known-exploited evidence recorded

Open Management Infrastructure Elevation of Privilege Vulnerability

Official EUVD record ↗
Cyber Security Agency of Singapore · English · CSA-SB-20210922Security Bulletin 22 Sep 2021

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 22 Sep 2021, published on 22 September 2021. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-711Multiples vulnérabilités dans les produits Microsoft

De multiples vulnérabilités ont été corrigées dans les produits Microsoft . Elles permettent à un attaquant de provoquer une exécution de code à distance, une atteinte à la confidentialité des données, une élévation de privilèges et une usurpation d'identité.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2021-002725複数の Microsoft 製品における権限を昇格される脆弱性

複数の Microsoft 製品には、Open Management Infrastructure に不備があるため、権限を昇格される脆弱性が存在します。 本脆弱性は、CVE-2021-38648 および CVE-2021-38649 とは異なる脆弱性です。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2021-002686複数の Microsoft 製品における権限を昇格される脆弱性

複数の Microsoft 製品には、Open Management Infrastructure に不備があるため、権限を昇格される脆弱性が存在します。 本脆弱性は、CVE-2021-38645 および CVE-2021-38648 とは異なる脆弱性です。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2021-002685複数の Microsoft 製品における権限を昇格される脆弱性

複数の Microsoft 製品には、Open Management Infrastructure に不備があるため、権限を昇格される脆弱性が存在します。 本脆弱性は、CVE-2021-38645 および CVE-2021-38649 とは異なる脆弱性です。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5393MS 9월 보안 위협에 따른 정기 보안 업데이트 권고

4103, 4484108, 5001958, 5001997, 5001999, 5002003, 5002005, 5002007, 5002009, 및 5002014 Microsoft SharePoint 관련 소프트웨어 중요 스푸핑 5002018, 5002020, 5002024 Microsoft Visual Studio 관련 소프트웨어 중요 원격 코드 실행 MS 업데이트 페이지 참고 [4] Microsoft Dynamics 365 관련 소프트웨어 중요 스푸핑 5006075, 5006076 Microsoft Azure 관련 소프트웨어 긴급 원격 코드 실행 MS 업데이트 페이지 참고 [4] [참고 사이트] [1] (한글) https://portal.msrc.microsoft.com/ko-kr/security-guidance [2] (영문) https://portal.msrc.microsoft.com/en-us/security-guidance [3] https://msrc.microsoft.com/update-guide/releaseNote/2021-Aug [4] https://msrc.microsoft.com/update-guide o 취약점 요약 정보 제품 카테고리 CVE 번호 CVE 제목 Azure Open Management Infrastructure CVE-2021-38649 오픈 관리 인프라 권한 상승 취약성 Azure Open Management Infrastructure CVE-2021-38648 오픈 관리 인프라 권한 상승 취약성 Azure Open Management Infrastructure CVE-2021-38647 오픈 관리 인프라 원격 코드 실행 취약성 Azure Open Management Infrastructure CVE-2021-38645 오픈 관리 인프라 권한 상승 취약성 Azure Sphere CVE-2021-36956 Azure Sphere 정보 유출 취약성 Dynamics Business Central Control CVE-2021-40440 Microsoft Dynamics Business Central 교차-사이트 스크립팅 취약성 Microsoft Accessibility Insights for Android CVE-2021-40448 Microsoft Android용 접근성 인사이트 정보 유출 취약성 Microsoft Edge (Chromium-d) CVE-2021-30632 Chromium: CVE-2021-30632 Out of bounds write in V8 Microsoft MPEG-2 Video Extension CVE-2021-38644 Microsoft MPEG-2 비

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 15 Sept 2021 · Last source change 10 Aug 2026, 15:10 UTC · CWE not yet assigned

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2021-25088
Product sourceCISA KEV
Remediation sourceCVE/CNA references
CWE sourceUnavailable
NVD statusNVD enriched

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    2.0.0 < DSC Agent versions: 2.71.1.25, 2.70.0.30, 3.0.0.3; 1.0.0 < OMS Agent for Linux GA v1.13.40-0; 3.0.0 < LAD v4.0.13 and LAD v3.0.135; 1.0.0 < Monitor, Update and Config Mgmnt 1.14.01; 1.0.0 < publication · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    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; Azure Diagnostics (LAD): 3.0.0 < LAD v4.0.13 and LAD v3.0.135; Azure Security Center: 1.0.0 < OMS Agent for Linux GA v1.13.40-0; Azure Sentinel: 1.0.0 < OMS Agent for Linux GA v1.13.40-0; Azure Stack Hub: 1.0.0 < Monitor, Update and Config Mgmnt 1.14.01; Container Monitoring Solution: 1.0.0 < publication; Log Analytics Agent: 1.0.0 < OMS Agent for Linux GA v1.13.40-0; Open Management Infrastructure: 16.0 < OMI Version 1.6.8-1; System Center Operations Manager (SCOM): 1.0.0 < OMI version: 1.6.8-1 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2021-25088↗CISA KEV record↗CVE authority or vendor reference↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2021-38649 · cve.blacktree.nl