What’s Vulnerable › Vulnerabilities

CVE-2021-42300: Azure Sphere Tampering Vulnerability

• Severity: medium (CVSS 4.6 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-11-10 · updated 2026-08-19

Description

Azure Sphere Tampering Vulnerability

Affected products

• Microsoft Azure Sphere: before 21.10 — fixed in 21.10
• Microsoft Azure Sphere: from 20.00 before 22.07 — fixed in 22.07

How to fix

Upgrade to a fixed version: Microsoft Azure Sphere 21.10; Microsoft Azure Sphere 22.07. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42300
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42300

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