Cyber Resilience

CVE-2021-42311

CriticalPublic PoC

Published: 15 December 2021

Published
15 December 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0266 86.1th percentile
Risk Priority 22 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-42311 is a critical-severity SQL Injection (CWE-89) vulnerability in Microsoft Defender For Iot. Its CVSS base score is 10.0 (Critical).

Operationally, ranked in the top 13.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

Microsoft Defender for IoT Remote Code Execution Vulnerability

CWE(s)
CWE-89

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

microsoft
defender for iot
≤ 10.5.2

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-89

Penetration testing uses SQL injection payloads against database interfaces, identifying and supporting fixes for SQL injection weaknesses.

SI-10 Information Input Validation
addresses: CWE-89

Validates query inputs to prevent SQL syntax or command manipulation.

References