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TI-2021-18736 Aliases CVE-2021-42303GHSA-ww45-x337-x32c

Azure RTOS Elevation of Privilege Vulnerability

Priority LOW 32CWE-269Published · Updated

Key facts

Attack vector
Physical
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from Microsoft.

Summary

Azure RTOS Elevation of Privilege Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00856 58th percentileScored 2026-11-07
Fix Fixed Azure Real Time Operating System (Microsoft): 6.1.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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
MicrosoftAzure Real Time Operating System6.0.0 to before 6.1.96.1.9Patch availableCNA
  • Azure Real Time Operating System VendorMicrosoft Affected 6.0.0 to before 6.1.9 Fixed in 6.1.9 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:azure_real_time_operating_system:*:*:*:*:*:*:*:*before 6.1.9VulnerableMicrosoft
  • cpe:2.3:o:microsoft:azure_real_time_operating_system:*:*:*:*:*:*:*:* Versions before 6.1.9 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Azure Real Time Operating System (Microsoft) Fixed in 6.1.9

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Azure Real Time Operating SystemFixed 6.1.9 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-42303
  2. 2026-10-03 Alias added: GHSA-ww45-x337-x32c

References

Patch 2

  • TI-2021-18737 Azure RTOS Elevation of Privilege Vulnerability CVSS 3.1MEDIUM 6.8
  • TI-2021-18735 Azure RTOS Elevation of Privilege Vulnerability CVSS 3.1MEDIUM 6.8
  • TI-2021-08259 Azure RTOS Information Disclosure Vulnerability CVSS 3.1MEDIUM 5.5
  • TI-2021-18754 Azure RTOS Information Disclosure Vulnerability CVSS 3.1LOW 3.3

Sources

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