CVE-2021-21571

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.

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.36%
Vendor Advisory dell.com
Affected: Dell UEFI BIOS https stack
Published at:
Updated at:

References

Link Tags
https://www.dell.com/support/kbdoc/en-us/000188682 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-21571?
CVE-2021-21571 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21571?
To fix CVE-2021-21571, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21571 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-21571 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21571?
CVE-2021-21571 affects Dell UEFI BIOS https stack.
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