CVE-2026-79551 Tenda Technology Co., Ltd NVR_4H CH3 - Hardcoded Credentials

Tenda Technology Co., Ltd NVR_4H CH3 v2.1 V27.5.58.6 contains a hardcoded cryptographic key caused by embedded static keys in the software, letting attackers potentially decrypt or tamper with encrypted data, exploit requires no special conditions.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
EPSS
0.30% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Hardcoded Credentials
Impact
Weak Cryptography
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-321

Vendor fix

Update to the latest version that removes hardcoded cryptographic keys.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs