DNS
CVE-2021-47799
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V8 - Authorization Privilege assignment review
|
| Impact | CVSS 6.2 (MEDIUM). Attack vector: Local. Complexity: Low. Privileges required: None. User interaction: None. Exploitation no authentication required. Exploitable via local access. Public exploit/POC available. |
| Exploit ScenarioDerived | An attacker without authentication could exploit this vulnerability to gain root access. |
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Alert meAnalysisAIv1 – Mar 12, 2026
its Sudo configuration contains a vulnerability that allows attackers to gain root access (CVSS 6.2).
RemediationAI
Monitor vendor advisories for a patch.
Affected ProductsAI
Product: its Sudo configuration.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
affects its Sudo configuration. 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.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
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.
Executive ViewAI
Organizations using Visual Tools DVR VX16 version 4.2.28 should be aware of moderate risk from CVE-2021-47799 rated CVSS 6.2. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.
Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Exploit-DB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.
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GitHub PoC