CVE-2021-42303 - Vulnerability Details - OpenCVE

Description

Azure RTOS Elevation of Privilege Vulnerability

Published: 2021-11-10

Score: 6.6 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Microsoft

Azure Real Time Operating System

affected

Version	Status	Constraints
`6.0.0`	affected	< 6.1.9

Configuration 1 [-]

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

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-29278	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 0.007.

Exploitation none

Automatable no

Technical Impact partial

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'}`

Subscriptions

Microsoft Azure Real Time Operating System

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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