How severe is CVE-2021-38647?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-38647 known to be exploited?

Yes. CVE-2021-38647 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 58 public proof-of-concept repositories are indexed.

Vulnerability in Microsoft Azure Automation State Configuration, Dsc Extension

CVE-2021-38647

Open Management Infrastructure Remote Code Execution Vulnerability

EPSS: 0.944 (100.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: 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.

Affected products

Microsoft Azure Automation State Configuration, Dsc Extension — versions 2.0.0
Microsoft Azure Automation Update Management — versions 1.0.0
Microsoft Azure Diagnostics (Lad) — versions 3.0.0
Microsoft Azure Security Center — versions 1.0.0
Microsoft Azure Sentinel — versions 1.0.0
Microsoft Azure Stack Hub — versions 1.0.0
Microsoft Container Monitoring Solution — versions 1.0.0
Microsoft Log Analytics Agent — versions 1.0.0
Microsoft Open Management Infrastructure — versions 16.0
Microsoft System Center Operations Manager (Scom) — versions 1.0.0

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2021-11-17.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38647 (x_refsource_MISC)
packetstormsecurity.com/files/164694/Microsoft-OMI-Management-Interface-Authent… (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-38647?: CVE-2021-38647 is a critical-severity vulnerability in Microsoft Azure Automation State Configuration, Dsc Extension. CVSS score: 9.8/10. Published 2021-09-15.
How severe is CVE-2021-38647?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-38647 known to be exploited?: Yes. CVE-2021-38647 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 58 public proof-of-concept repositories are indexed.