CVE-2021-21571
5.9 · MEDIUMOverview
CVE-2021-21571 is a medium-severity vulnerability affecting dell alienware_m15_r6_firmware. It was published on June 24, 2021 and has a CVSS 3.1 base score of 5.9 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Dell UEFI BIOS https stack leveraged by the Dell BIOSConnect feature and Dell HTTPS Boot feature contains an improper certificate validation vulnerability. A remote unauthenticated attacker may exploit this vulnerability using a person-in-the-middle attack which may lead to a denial of service and payload tampering.
Remediation
Check the references section for vendor advisories and patches from dell. Update alienware_m15_r6_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| dell | alienware_m15_r6_firmware | >= 0, < 1.3.3 | Affected |
| dell | chengming_3990_firmware | >= 0, < 1.4.1 | Affected |
| dell | chengming_3991_firmware | >= 0, < 1.4.1 | Affected |
| dell | g15_5510_firmware | >= 0, < 1.4.0 | Affected |
| dell | g15_5511_firmware | >= 0, < 1.3.3 | Affected |
| dell | g3_3500_firmware | >= 0, < 1.9.0 | Affected |
| dell | g5_5500_firmware | >= 0, < 1.9.0 | Affected |
| dell | g7_7500_firmware | >= 0, < 1.9.0 | Affected |
| dell | g7_7700_firmware | >= 0, < 1.9.0 | Affected |
| dell | inspiron_14_5418_firmware | >= 0, < 2.1.0_a06 | Affected |
Frequently Asked Questions
What is CVE-2021-21571?
CVE-2021-21571 is a medium-severity vulnerability affecting dell alienware_m15_r6_firmware. It was published on June 24, 2021 and has a CVSS 3.1 base score of 5.9 (MEDIUM).
How severe is CVE-2021-21571?
This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-21571?
Check the references section for vendor advisories and patches from dell. Update alienware_m15_r6_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-21571?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-21571 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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