CVE-2021-21510

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-03-08 · updated 2026-06-17
Weakness: CWE-20

Description

Dell iDRAC8 versions prior to 2.75.100.75 contain a host header injection vulnerability. A remote unauthenticated attacker may potentially exploit this vulnerability by injecting arbitrary ‘Host’ header values to poison a web-cache or trigger redirections.

Affected products

Dell Idrac8 Firmware: before 2.75.100.75 — fixed in 2.75.100.75

How to fix

Upgrade to a fixed version: Dell Idrac8 Firmware 2.75.100.75. Check the vendor advisory for mitigations.

References

https://www.dell.com/support/kbdoc/en-us/000183758/dsa-2021-041-dell-emc-idrac-8-security-update-for-a-host-header-injection-vulnerability
https://www.dell.com/support/kbdoc/en-us/000183758/dsa-2021-041-dell-emc-idrac-8-security-update-for-a-host-header-injection-vulnerability

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