CVE-2026-5527: Tenda 4G03 Pro ECDSA P-256 Private Key server.key hard-coded key

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-05 · updated 2026-07-24
Weakness: CWE-320

Description

A weakness has been identified in Tenda 4G03 Pro 1.0/1.0re/01.bin/04.03.01.53. Affected by this issue is some unknown functionality of the file /etc/www/pem/server.key of the component ECDSA P-256 Private Key Handler. This manipulation causes use of hard-coded cryptographic key . It is possible to initiate the attack remotely.

Affected products

Tenda 4G03 Pro: 04.03.01.53

References

https://vuldb.com/submit/782053
https://vuldb.com/vuln/355280
https://vuldb.com/vuln/355280/cti
https://www.tenda.com.cn/

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