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TI-2021-19676 Aliases CVE-2021-43888GHSA-9fhq-8w23-f2mg

Microsoft Defender for IoT Information Disclosure Vulnerability

Priority MEDIUM 45Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Microsoft Defender for IoT Information Disclosure Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03193 88th percentileScored 2026-11-07
Fix Fixed Microsoft Defender for IoT (Microsoft): 10.5.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft Defender for IoT22.0.0 to before 10.5.210.5.2Patch availableCNA
  • Microsoft Defender for IoT VendorMicrosoft Affected 22.0.0 to before 10.5.2 Fixed in 10.5.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:defender_for_iot:*:*:*:*:*:*:*:*before 10.5.2VulnerableMicrosoft
  • cpe:2.3:a:microsoft:defender_for_iot:*:*:*:*:*:*:*:* Versions before 10.5.2 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Microsoft Defender for IoT (Microsoft) Fixed in 10.5.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-43888
  2. 2026-10-03 Alias added: GHSA-9fhq-8w23-f2mg

References

Patch 1

  • TI-2024-19234 Microsoft Defender for IoT Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-18746 Microsoft Defender for IoT Remote Code Execution Vulnerability CVSS 3.1CRITICAL 10.0
  • TI-2021-18744 Microsoft Defender for IoT Remote Code Execution Vulnerability CVSS 3.1CRITICAL 10.0
  • TI-2021-19674 Microsoft Defender for IoT Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2024-14083 Microsoft Defender for IoT Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-18743 Microsoft Defender for IoT Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences