CVE-2021-21539

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Published Apr 30, 2021 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Description

Dell EMC iDRAC9 versions prior to 4.40.00.00 contain a Time-of-check Time-of-use (TOCTOU) race condition vulnerability. A remote authenticated attacker could potentially exploit this vulnerability to gain elevated privileges when a user with higher privileges is simultaneously accessing iDRAC through the web interface.

Affected Products

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

Vendor Product Default status Versions

Dell

Integrated Dell Remote Access Controller (iDRAC)

affected

Version	Status	Constraints
`unspecified`	affected	< 4.40.00.00

Configuration 1 [-]

cpe:2.3:o:dell:idrac9_firmware:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-8811	Dell EMC iDRAC9 versions prior to 4.40.00.00 contain a Time-of-check Time-of-use (TOCTOU) race condition vulnerability. A remote authenticated attacker could potentially exploit this vulnerability to gain elevated privileges when a user with higher privileges is simultaneously accessing iDRAC through the web interface.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact High

Availability Impact Low

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity High

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.616% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://www.dell.com/support/kbdoc/000185293

History

No history.

Subscriptions

Dell Idrac9 Firmware

Weaknesses

CWE-367

Sources

CVE record Updated: Sep 16, 2024, 4:58 PM

Status: PUBLISHED
Assigner: dell
Published: Apr 30, 2021, 8:55 PM
Updated: Sep 16, 2024, 4:58 PM
Reserved: Jan 4, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:35 AM

Status: Modified
Published: Apr 30, 2021, 9:15 PM
Modified: Jun 17, 2026, 3:35 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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