---
id: CVE-2026-79551
title: >-
  Tenda Technology Co., Ltd NVR_4H CH3 v2.1 V27.5.58.6 was discovered to contain
  a hardcoded cryptographic key.
summary: >-
  Tenda Technology Co., Ltd NVR_4H CH3 v2.1 V27.5.58.6 was discovered to contain
  a hardcoded cryptographic key.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-321
published: '2026-09-15'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T20:00:03.713'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-79551'
references:
  - url: 'http://tenda.com'
    label: cve@mitre.org
  - url: 'https://github.com/snyi001/CVE-2026-79551-Tenda'
    label: cve@mitre.org
  - url: 'https://www.tendacn.com/material/show/805569838370885'
    label: cve@mitre.org
tags:
  - nvd
  - exploit-available
  - cve.org
epss: 0.003
epssPercentile: 0.20282
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/snyi001/CVE-2026-79551-Tenda'
  checkedAt: '2026-09-26T09:06:01.122Z'
exploitAvailable: true
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-22T15:30:42.754550Z'
ingestedAt: '2026-09-15T15:39:12.901Z'
---

## Overview

Tenda Technology Co., Ltd NVR_4H CH3 v2.1 V27.5.58.6 was discovered to contain a hardcoded cryptographic key.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.