CVE-2021-33895 is a critical authentication bypass vulnerability affecting ETINET BACKBOX E4.09 and H4.09, including specific firmware versions. The flaw allows an attacker to log into the Backbox UI by using the User ID of the BBSV process, as the system incorrectly validates the password when the XYGate application is not running. This vulnerability carries a high CVSS score of 8.1, indicating a severe risk with high impact on confidentiality, integrity, and availability, despite requiring high attack complexity. While no public exploit code (Metasploit, Nuclei, ExploitDB) or active exploitation has been observed, and community discussion is minimal, a hotfix and resolution are available in later versions.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
t0954v04\^aaoCPE matchmatch criteria | cpe:2.3:o:hpe:backbox_h4.09_firmware:t0954v04\^aao:*:*:*:*:*:*:* | ||
2020-09-22CPE matchmatch criteria | cpe:2.3:o:etinet:backbox_e4.09_firmware:2020-09-22:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.