CVE Vulnerability

CVE-2021-21571

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.

5.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.dell.com/support/kbdoc/en-us/000188682 Vendor Advisory
Configurations

Configuration 1
Information

Published : 2021-06-24 05:15

Updated : 2021-07-02 02:27

NVD link : CVE-2021-21571

Mitre link : CVE-2021-21571

Products Affected

Dell

Latitude 5420 Firmware

CWE
CWE-295

Improper Certificate Validation