VULNERABILITY INTELLIGENCE

CVE-2021-21571

CVSS score5.9 MEDIUM
EPSS probability0.54%
CISA KEVNot currently listed
Published2021-06-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H

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.

Weakness classification

  • security_alert@emc.com: CWE-295
  • nvd@nist.gov: CWE-295

Primary references