Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2021-27074

CVE-2021-27074MEDIUM

Microsoft Azure Sphere — Azure Sphere Unsigned Code Execution Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   N   N  U  N  H  N    6.2   .0131   69.6     —

AFFECTED
  Product       Versions  Fixed
  Azure Sphere  - –       —

TIMELINE
  Feb 10  Reserved by microsoft
  Mar 11  Published (CNA: microsoft)
  Aug 19  EXPLOIT PUBLISHED — CVE-2021-27074 (Microsoft Azure Sphere). Public exploit reference added.

CNA: microsoft · CVSS v3.1 · 4 references · NVD status: Modified

Description

Azure Sphere Unsigned Code Execution Vulnerability

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
February 10, 2021	Reserved	Reserved by microsoft
March 11, 2021	Published	Published (CNA: microsoft)
August 19, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2021-27074 (Microsoft Azure Sphere). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Azure Sphere	—	-	—

References (4)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27074
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27074 [Patch, Vendor Advisory]
https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1247 [Exploit, Third Party Advisory]
https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1249 [Exploit, Third Party Advisory]

Authoritative record: CVE-2021-27074 at cve.org

Vendors: microsoft

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