What is the CVSS score of CVE-2021-47796?

CVE-2021-47796 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Linux are affected by CVE-2021-47796?

Organizations using Denver SHC-150 Smart Wifi Camera face critical risk from CVE-2021-47796, a hard-coded credentials vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2021-47796?

Yes, a public proof-of-concept exploit is available for CVE-2021-47796. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2021-47796?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Audit authentication configurations and rotate any potentially compromised credentials.

Linux CVE-2021-47796

CRITICAL

Use of Hard-coded Credentials (CWE-798)

2026-01-16 disclosure@vulncheck.com

Linux

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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 16, 2026 - 00:16 nvd

CRITICAL 9.8

DescriptionCVE.org

Denver SHC-150 Smart Wifi Camera contains a hardcoded telnet credential vulnerability that allows unauthenticated attackers to access a Linux shell. Attackers can connect to port 23 using the default credential to execute arbitrary commands on the camera's operating system.