CVE-2021-42071 is a critical unauthenticated remote command execution vulnerability affecting Visual Tools DVR VX16 4.2.28.0 and its firmware. Attackers can exploit this by injecting shell metacharacters into the User-Agent HTTP header of the cgi-bin/slogin/login.py script. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While not on the KEV catalog, public exploit code is available via ExploitDB and Nuclei templates, indicating a high potential for exploitation despite limited community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
4.2.28.0CPE matchmatch criteria | cpe:2.3:o:visual-tools:dvr_vx16_firmware:4.2.28.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/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, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.