What’s Vulnerable › Vulnerabilities

CVE-2021-42301: Azure RTOS Information Disclosure Vulnerability

• Severity: low (CVSS 2.1 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% 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 RTOS Information Disclosure Vulnerability

Affected products

• Microsoft Azure Rtos: before 6.1.9 — fixed in 6.1.9
• Microsoft Azure Real Time Operating System: from 6.0.0 before 6.1.9 — fixed in 6.1.9

How to fix

Upgrade to a fixed version: Microsoft Azure Rtos 6.1.9; Microsoft Azure Real Time Operating System 6.1.9. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42301
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42301

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