What’s Vulnerable › Vulnerabilities

CVE-2021-21543

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-30 · updated 2026-06-17
• Weakness: CWE-79

Description

Dell EMC iDRAC9 versions prior to 4.40.00.00 contain multiple stored cross-site scripting vulnerabilities. A remote authenticated malicious user with high privileges could potentially exploit these vulnerabilities to store malicious HTML or JavaScript code through multiple affected parameters. When victim users access the submitted data through their browsers, the malicious code gets executed by the web browser in the context of the vulnerable application.

Affected products

• Dell EMC iDRAC: before 4.40.00.00 — fixed in 4.40.00.00

How to fix

Upgrade to a fixed version: Dell EMC iDRAC 4.40.00.00. Check the vendor advisory for mitigations.

References

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

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