What is the CVSS score of CVE-2021-47799?

CVE-2021-47799 has a CVSS 3.1 base score of 6.2 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of DNS are affected by CVE-2021-47799?

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.

Is there a public PoC exploit available for CVE-2021-47799?

Yes, a public proof-of-concept exploit is available for CVE-2021-47799. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2021-47799?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

DNS CVE-2021-47799

MEDIUM

Incorrect Privilege Assignment (CWE-266)

2026-01-15 disclosure@vulncheck.com

DNS Privilege Escalation

6.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.2 MEDIUM

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

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 16, 2026 - 15:55 vuln.today

Public exploit code

CVE Published

Jan 15, 2026 - 16:16 nvd

MEDIUM 6.2

DescriptionCVE.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.

AnalysisAI

its Sudo configuration contains a vulnerability that allows attackers to gain root access (CVSS 6.2).

Technical ContextAI

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.

Affected ProductsAI

Product: its Sudo configuration.

RemediationAI

Monitor vendor advisories for a patch.

CVE-2021-47799 vulnerability details – vuln.today

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DNS CVE-2021-47799

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

Affected ProductsAI

RemediationAI

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External POC / Exploit Code