RCE in Visual-tools Dvr_vx16
CVE-2021-42071
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.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.699 (99.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Visual-tools Dvr_vx16
- Visual-tools Dvr_vx16_firmware — versions 4.2.28.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-42071?
- CVE-2021-42071 is a critical-severity vulnerability in Visual-tools Dvr_vx16, classified under OS Command Injection. CVSS score: 9.8/10. Published 2021-10-07.
- How severe is CVE-2021-42071?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-42071 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.