CVE-2021-21539

HighCVSS 7.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-367

Affected software

VendorProductVersions
DellIntegrated Dell Remote Access Controller (iDRAC)>= unspecified, < 4.40.00.00

References

Timeline

Published
Apr 30, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-21539: High severity, CVSS 7.1 | Vulnix