CVE-2021-21574 is a high-severity buffer overflow vulnerability in the Dell BIOSConnect feature, affecting Dell systems. An authenticated malicious administrator with local access could exploit this flaw to execute arbitrary code and bypass UEFI security restrictions, leading to full system compromise. While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered significant community discussion and media coverage, indicating a high level of awareness regarding its potential impact on over 30 million Dell devices.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.3.3CPE matchmatch criteria | cpe:2.3:o:dell:alienware_m15_r6_firmware:*:*:*:*:*:*:*:* | ||
< 1.4.1CPE matchmatch criteria | cpe:2.3:o:dell:chengming_3990_firmware:*:*:*:*:*:*:*:* | ||
< 1.4.1CPE matchmatch criteria | cpe:2.3:o:dell:chengming_3991_firmware:*:*:*:*:*:*:*:* | ||
< 1.4.0CPE matchmatch criteria | cpe:2.3:o:dell:g15_5510_firmware:*:*:*:*:*:*:*:* | ||
< 1.3.3CPE matchmatch criteria | cpe:2.3:o:dell:g15_5511_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.