CVE-2021-42071 EXPLOIT
9.8
CRITICAL · CVSS 3.1 · EPSS 69.9% (pctl 99)
Patch early
A public exploit exists.
Description
In Visual Tools DVR VX16 4.2.28.0, an unauthenticated attacker can achieve remote command execution via shell metacharacters in the cgi-bin/slogin/login.py User-Agent HTTP header.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 69.88% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-78 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2021-10-07 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| visual-tools | dvr vx16 |
| visual-tools | dvr vx16 firmware |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Visual Tools DVR VX16 4.2.28.0 - OS Command Injection (Unauthenticated) | 2021-07-06 |
References
→ the Explorer · watch your stack · NVD