CVE-2021-21505
CVE-2021-21505 is a high-severity vulnerability in Dell Emc Integrated System For Microsoft Azure Stack Hub Firmware with a CVSS 3.x base score of 8.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1188.
Key facts
- Severity: High (CVSS 3.x base score 8.0)
- CVSS v2: 10.0
- EPSS exploit prediction: 2% (82nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-1188
- Affected product: Dell Emc Integrated System For Microsoft Azure Stack Hub Firmware
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2021-21505?
- 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.
- How severe is CVE-2021-21505?
- CVE-2021-21505 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-21505 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-21505?
- CVE-2021-21505 affects Dell Emc Integrated System For Microsoft Azure Stack Hub Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-21505?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-21505 published?
- CVE-2021-21505 was published on 2021-05-06 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:dell:emc_integrated_system_for_microsoft_azure_stack_hub_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Dell Emc Integrated System For Microsoft Azure Stack Hub Firmware
- CVE-2021-36302 — Critical (CVSS 9.9): All Dell EMC Integrated System for Microsoft Azure Stack Hub versions contain a privilege escalation vulnerability. A…
All CVEs affecting Dell Emc Integrated System For Microsoft Azure Stack Hub Firmware →
Other CWE-1188 (Insecure Default Initialization of Resource) vulnerabilities
- CVE-2026-31957 — Critical (CVSS 10.0): Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. From 3.0.0 to before 3.1.0, if…
- CVE-2025-41672 — Critical (CVSS 10.0): A remote unauthenticated attacker may use default certificates to generate JWT Tokens and gain full access to the tool…
- CVE-2024-0001 — Critical (CVSS 10.0): A condition exists in FlashArray Purity whereby a local account intended for initial array configuration remains active…
- CVE-2024-2912 — Critical (CVSS 10.0): An insecure deserialization vulnerability exists in the BentoML framework, allowing remote code execution (RCE) by…
- CVE-2021-34795 — Critical (CVSS 10.0): Multiple vulnerabilities in the web-based management interface of the Cisco Catalyst Passive Optical Network (PON)…
- CVE-2017-7964 — Critical (CVSS 10.0): Zyxel WRE6505 devices have a default TELNET password of 1234 for the root and admin accounts, which makes it easier for…
Browse all CWE-1188 (Insecure Default Initialization of Resource) vulnerabilities →