CVE-2021-21505

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-05-06 · updated 2026-06-17
Weakness: CWE-255

Description

Dell EMC Integrated System for Microsoft Azure Stack Hub, versions 1906 – 2011, contain an undocumented default iDRAC account. A remote unauthenticated attacker, with the knowledge of the default credentials, could potentially exploit this to log in to the system to gain root privileges.

Affected products

Dell EMC Integrated System for Microsoft Azure Stack Hub: from 1906 through 2011

References

https://www.dell.com/support/kbdoc/en-us/000186008/dsa-2021-020-dell-emc-integrated-system-for-microsoft-azure-stack-hub-security-update-for-an-idrac-undocumented-account-vulnerability
https://www.dell.com/support/kbdoc/en-us/000186008/dsa-2021-020-dell-emc-integrated-system-for-microsoft-azure-stack-hub-security-update-for-an-idrac-undocumented-account-vulnerability

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