CVE-2021-42071
CRITICALCVSS 9.8/10EPSS 69.88%
Last modified
CVE-2021-42071 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 69.88% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Visual-Tools | Dvr Vx16 Firmware | 4.2.28.0 |
References
- https://visual-tools.com/Vendor Advisory
- https://www.exploit-db.com/exploits/50098Exploit, Third Party Advisory, VDB Entry
- https://www.swascan.com/security-advisory-visual-tools-dvr-cve-2021-42071/Exploit, Third Party Advisory
- https://visual-tools.com/Vendor Advisory
- https://www.exploit-db.com/exploits/50098Exploit, Third Party Advisory, VDB Entry
- https://www.swascan.com/security-advisory-visual-tools-dvr-cve-2021-42071/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2021-42071?
CVE-2021-42071 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 69.88% probability of exploitation in the next 30 days.
How do I fix CVE-2021-42071?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-42071?
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Scan your code nowSource: NVD / NIST