Critical severity9.8NVD Advisory· Published Oct 7, 2021· Updated Jun 17, 2026
CVE-2021-42071
CVE-2021-42071
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- cpe:2.3:o:visual-tools:dvr_vx16_firmware:4.2.28.0:*:*:*:*:*:*:*
- Visual Tools/DVR VX16description
- Range: 4.2.28.0
Patches
Vulnerability mechanics
References
3- www.exploit-db.com/exploits/50098nvdExploitThird Party AdvisoryVDB Entry
- www.swascan.com/security-advisory-visual-tools-dvr-cve-2021-42071/nvdExploitThird Party Advisory
- visual-tools.comnvdVendor Advisory
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