CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:HCVE-2021-21571
Medium (6.5) in dell. EPSS 0.5% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-31)
- CWE
- CWE-295
- Published
- Modified
- Record from
- the NVD, synced
Affected
- dell:alienware_m15_r6_firmware
- dell:chengming_3990_firmware
- dell:chengming_3991_firmware
- dell:g15_5510_firmware
- dell:g15_5511_firmware
- dell:g3_3500_firmware
- dell:g5_5500_firmware
- dell:g7_7500_firmware
- dell:g7_7700_firmware
- dell:inspiron_14_5418_firmware
- dell:inspiron_15_5518_firmware
- dell:inspiron_15_7510_firmware
- dell:inspiron_3501_firmware
- dell:inspiron_3880_firmware
- dell:inspiron_3881_firmware
- dell:inspiron_3891_firmware
- dell:inspiron_5300_firmware
- dell:inspiron_5301_firmware
- dell:inspiron_5310_firmware
- dell:inspiron_5400_2-in-1_firmware
- dell:inspiron_5400_aio_firmware
- dell:inspiron_5401_aio_firmware
- dell:inspiron_5401_firmware
- dell:inspiron_5402_firmware
- dell:inspiron_5406_2n1_firmware
- dell:inspiron_5408_firmware
- dell:inspiron_5409_firmware
- dell:inspiron_5410_2-in-1_firmware
- dell:inspiron_5501_firmware
- dell:inspiron_5502_firmware
- dell:inspiron_5508_firmware
- dell:inspiron_5509_firmware
- dell:inspiron_7300_2-in-1_firmware
- dell:inspiron_7300_firmware
- dell:inspiron_7306_2-in-1_firmware
- dell:inspiron_7400_firmware
- dell:inspiron_7500_2-in-1_firmware
- dell:inspiron_7500_firmware
- dell:inspiron_7501_firmware
- dell:inspiron_7506_firmware
- dell:inspiron_7610_firmware
- dell:inspiron_7700_aio_firmware
- dell:inspiron_7706_2-in-1_firmware
- dell:latitude_3120_firmware
- dell:latitude_3320_firmware
- dell:latitude_3410_firmware
- dell:latitude_3420_firmware
- dell:latitude_3510_firmware
- dell:latitude_3520_firmware
- dell:latitude_5310_2-in-1_firmware