CVE-2021-47799 Visual Tools DVR VX16 4.2.28 - Local Privilege Escalation
Attackers can gain root access on Visual Tools DVR VX16 devices by exploiting unsafe Sudo configurations to bind a shell.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-47799?
CVE-2021-47799 is a high-severity vulnerability in Visual-Tools Visual Tools DVR VX16, published on 15 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Visual Tools DVR VX16 version 4.2.28 contains a local privilege escalation vulnerability in its Sudo configuration that allows attackers to gain root access. Attackers can exploit the unsafe Sudo settings by using mount commands to bind a shell, enabling unauthorized system-level privileges.
Weakness: CWE-266
Which versions are affected by CVE-2021-47799?
How do I fix CVE-2021-47799?
No fix has been published for CVE-2021-47799 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-47799 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47799 exists.
Sources
Also known as GHSA-f5m3-9gmr-6wrh.