CVE-2021-21573 is a buffer overflow vulnerability in the Dell BIOSConnect feature, affecting Dell systems. An authenticated malicious administrator with local access can exploit this to execute arbitrary code and bypass UEFI restrictions, leading to high impact on confidentiality, integrity, and availability. While not actively exploited (KEV: No), its high CVSS score (7.5) and significant media coverage (3 articles) indicate potential risk, despite no public exploit code (Metasploit, Nuclei, ExploitDB: None).
| 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.