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CVE-2026-79551 Tenda Technology Co., Ltd CVE debrief

A CVE record for a hardcoded cryptographic key vulnerability in Tenda Technology Co., Ltd NVR_4H CH3 v2.1 V27.5.58.6 was published on 2026-09-15T15:17:22.073Z and last modified on 2026-09-22T20:00:03.713Z. The vulnerability allows potential unauthorized access due to the hardcoded key. Defenders should assess exposure and prioritize remediation. The CVE record and NVD entry provide limited information, with the NVD entry currently listed as Deferred. The vulnerability affects Tenda Technology Co., Ltd NVR_4H CH3 v2.1 V27.5.58.6 devices, which may be exploited for unauthorized access. Verification of inventory and exposure is necessary, and remediation priority is high due to the

Vendor
Tenda Technology Co., Ltd
Product
NVR_4H CH3 v2.1
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-15
Original CVE updated
2026-09-22
Advisory published
2026-09-15
Advisory updated
2026-09-22

Who should care

Defenders responsible for managing and securing Tenda Technology Co., Ltd NVR_4H CH3 v2.1 V27.5.58.6 devices should assess potential exposure and prioritize remediation.

Why it matters

Defenders should prioritize verifying the presence of this vulnerability in their inventory and assessing potential exposure due to the hardcoded cryptographic key in Tenda Technology Co., Ltd NVR_4H CH3 v2.1 V27.5.58.6.

  • Potential unauthorized access to the device
  • Possible exploitation attempts require monitoring
  • Verification of inventory and exposure is necessary
  • Remediation priority is high due to the hardcoded key

Technical summary

The Tenda Technology Co., Ltd NVR_4H CH3 v2.1 V27.5.58.6 contains a hardcoded cryptographic key, which could potentially allow an attacker to access the device. The vulnerability affects Tenda Technology Co., Ltd NVR_4H CH3 v2.1 V27.5.58.6 devices and may be exploited for unauthorized access. Defenders should prioritize verifying the presence of this vulnerability in their inventory and assessing potential exposure due to the hardcoded key. The vulnerability class is a hardcoded cryptographic key, and the likely operational impact is potential unauthorized access.

Defensive priority

Defenders should prioritize verifying the presence of this vulnerability in their inventory and assessing potential exposure.

Recommended defensive actions

  • Verify the presence of this vulnerability in your inventory
  • Assess potential exposure and prioritize remediation
  • Monitor for potential exploitation attempts

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability, with the NVD entry currently listed as Deferred. The source details are restricted, and defenders should verify the presence of this vulnerability in their inventory with explicit evidence-limit language and defensive verification tasks. The hardcoded cryptographic key vulnerability in Tenda Technology Co., Ltd NVR_4H CH3 v2.1 V27.5.58.6 could allow unauthorized access. The CVE Program and NVD provide

Sources and references

Verified primary and authoritative sources

  • CVE-2026-79551 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-79551

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-79551 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-79551

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.