CVE-2021-21540

8.1 highEPSS 1.2%

High (8.1) in dell idrac9 firmware. EPSS 1.2% chance of exploitation in the next 30 days.

Dell EMC iDRAC9 versions prior to 4.40.00.00 contain a stack-based overflow vulnerability. A remote authenticated attacker could potentially exploit this vulnerability to overwrite configuration information by injecting arbitrarily large payload.

Severity

CVSS 3.1

8.1 high

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

EPSS: 1.2% chance of exploitation in the next 30 days; higher than 67% of CVEs (scores of 2026-10-31)
CWEs: CWE-787, CWE-121
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

Check your stack JSON