CVE-2021-47796: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-gv5j-2376-g8mr
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CVSS 9.8
CWE-798 CWE-306
Published
Advisory Summary

CVE-2021-47796 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (CWE-798: Use of Hard-coded Credentials) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product contains hard-coded credentials, such as a password or cryptographic key.. Remediation is available in the latest vendor maintenance releases.

CVE-2021-47796 at a Glance

CVE Identifier CVE-2021-47796
GHSA Identifier GHSA-gv5j-2376-g8mr
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-798: Use of Hard-coded Credentials
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2021-47796

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2021-47796, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-798: Use of Hard-coded Credentials, where the product contains hard-coded credentials, such as a password or cryptographic key. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

References

NVD — CVE-2021-47796 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-47796
www.exploit-db.com/exploits/50160 WEB
https://www.exploit-db.com/exploits/50160
www.exploit-db.com/exploits/50162 WEB
https://www.exploit-db.com/exploits/50162
www.vulncheck.com/advisories/denver-s... WEB
https://www.vulncheck.com/advisories/denver-sho-110-ip-camera-unauthenticated-snapshot-access
www.vulncheck.com/advisories/denver-s... WEB
https://www.vulncheck.com/advisories/denver-smart-wifi-camera-shc-telnet-remote-code-execution-rce
Software Security Information SECURITY
http://old.denver.eu/products/smart-home-security/denver-sho-110/c-1024/c-1243/p-3826
Software Security Information SECURITY
http://old.denver.eu/products/smart-home-security/ip-camera-/indoor/c-1024/c-1245

Frequently Asked Questions

What is CVE-2021-47796?
CVE-2021-47796 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-798: Use of Hard-coded Credentials.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2021-47796?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2021-47796?
CVE-2021-47796 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2021-47796?
CVE-2021-47796 is classified under CWE-798: Use of Hard-coded Credentials (The product contains hard-coded credentials, such as a password or cryptographic key.).
How can I check Maven dependencies for CVE-2021-47796?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gv5j-2376-g8mr",
  "modified" : "2026-10-12T15:31:53Z",
  "published" : "2026-01-16T00:30:55Z",
  "aliases" : [ "CVE-2021-47796" ],
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-47796"
  }, {
    "type" : "WEB",
    "url" : "https://www.exploit-db.com/exploits/50160"
  }, {
    "type" : "WEB",
    "url" : "https://www.exploit-db.com/exploits/50162"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/denver-sho-110-ip-camera-unauthenticated-snapshot-access"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/denver-smart-wifi-camera-shc-telnet-remote-code-execution-rce"
  }, {
    "type" : "WEB",
    "url" : "http://old.denver.eu/products/smart-home-security/denver-sho-110/c-1024/c-1243/p-3826"
  }, {
    "type" : "WEB",
    "url" : "http://old.denver.eu/products/smart-home-security/ip-camera-/indoor/c-1024/c-1245"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-306", "CWE-798" ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-01-16T00:16:23Z"
  }
}