DSA-2021-071: Dell Hybrid Client Security Update for Multiple Vulnerabilities
Summary: Dell Hybrid Client 1.5 contains remediation for multiple security vulnerabilities that may be exploited by malicious users to compromise the affected system.
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Impact
High
Details
| Proprietary Code CVE(s) | Description | CVSS Base Score | CVSS Vector String |
| CVE-2021-21534 | Dell Hybrid Client versions prior to 1.5 contain an information exposure vulnerability. A local unauthenticated attacker may exploit this vulnerability in order to gain access to sensitive information via the local API. | 4.0 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| CVE-2021-21535 | Dell Hybrid Client versions prior to 1.5 contain a missing authentication for a critical function vulnerability. A local unauthenticated attacker may exploit this vulnerability in order to gain root level access to the system. |
7.4 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CVE-2021-21536 | Dell Hybrid Client versions prior to 1.5 contain an information exposure vulnerability. A local unauthenticated attacker may exploit this vulnerability in order to register the client to a server in order to view sensitive information. | 6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| CVE-2021-21537 | Dell Hybrid Client versions prior to 1.5 contain an information exposure vulnerability. A local unauthenticated attacker may exploit this vulnerability in order to view and exfiltrate sensitive information on the system. | 6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| Proprietary Code CVE(s) | Description | CVSS Base Score | CVSS Vector String |
| CVE-2021-21534 | Dell Hybrid Client versions prior to 1.5 contain an information exposure vulnerability. A local unauthenticated attacker may exploit this vulnerability in order to gain access to sensitive information via the local API. | 4.0 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| CVE-2021-21535 | Dell Hybrid Client versions prior to 1.5 contain a missing authentication for a critical function vulnerability. A local unauthenticated attacker may exploit this vulnerability in order to gain root level access to the system. |
7.4 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CVE-2021-21536 | Dell Hybrid Client versions prior to 1.5 contain an information exposure vulnerability. A local unauthenticated attacker may exploit this vulnerability in order to register the client to a server in order to view sensitive information. | 6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| CVE-2021-21537 | Dell Hybrid Client versions prior to 1.5 contain an information exposure vulnerability. A local unauthenticated attacker may exploit this vulnerability in order to view and exfiltrate sensitive information on the system. | 6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected Products & Remediation
| Product | Affected Version(s) | Updated Version(s) | Link to Update | |
| Dell Hybrid Client | Versions prior to 1.5 | 1.5 | Dell Hybrid Client 1.5 | |
| Product | Affected Version(s) | Updated Version(s) | Link to Update | |
| Dell Hybrid Client | Versions prior to 1.5 | 1.5 | Dell Hybrid Client 1.5 | |
Revision History
| Revision | Date | Description |
| 1.0 | 2021-04-20 | Initial Release |
Related Information
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Affected Products
Dell Hybrid ClientProducts
Product Security InformationArticle Properties
Article Number: 000184667
Article Type: Dell Security Advisory
Last Modified: 18 Sep 2025
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