CVE-2021-42303 - Vulnerability Details - OpenCVE

Azure RTOS Elevation of Privilege Vulnerability

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact High

User Interaction Required

No CVSS v3.0

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

The EPSS score is 0.00388.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Microsoft Subscribe	Azure Real Time Operating System Subscribe

Configuration 1 [-]

cpe:2.3:o:microsoft:azure_real_time_operating_system:*:*:*:*:*:*:*:*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2021-29278	Azure RTOS Elevation of Privilege Vulnerability

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42303
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42303

History

Wed, 19 Aug 2026 16:45:00 +0000

Type	Values Removed	Values Added
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42303

Mon, 18 Nov 2024 21:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2021-11-10T00:47:35.000Z

Updated: 2026-08-19T16:27:03.552Z

Reserved: 2021-10-12T00:00:00.000Z

Link: CVE-2021-42303

Vulnrichment

Updated: 2024-08-04T03:30:38.290Z

NVD

Status : Modified

Published: 2021-11-10T01:19:48.547

Modified: 2026-08-19T17:18:02.177

Link: CVE-2021-42303

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-269

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