CVE-2021-21539

7.1 highEPSS 0.6%

High (7.1) in dell idrac9 firmware. EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.1 high

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

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-31)
CWE: CWE-367
Published: 2021-04-30
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

dell:idrac9_firmware

References

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

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