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CVE-2021-21735

MediumPublished

A ZTE product has an information leak vulnerability. Due to improper permission settings, an attacker with ordinary user permissions could exploit this...

Published: Jun 10, 2021
Updated: May 26, 2026
Assigning CNA: zte
Evidence observed: Aug 8, 2026

Primary CVSS

6.5/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS probability estimate

0.9%

Low · next 30 days

Percentile: 58.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

A ZTE product has an information leak vulnerability. Due to improper permission settings, an attacker with ordinary user permissions could exploit this vulnerability to obtain some sensitive user information through the wizard page without authentication. This affects ZXHN H168N all versions up to V3.5.0_EG1T4_TE.

Sources

cve-2021-21735-zte-zxhn-h168n-admin-compromisePoC
CVE-2021-21735 write-up: ZTE ZXHN H168N V3.5 wizard-page information leak, firmware routing flaw, and the path from exposed PPPoE/WLAN data to full admin compromise.

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