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Vulnerability record · CVE-2021-21730 · published 13 April 2021

CVE-2021-21730: Zte zxhn h168n firmware vulnerability

Zte · Zxhn H168n Firmware

A ZTE product is impacted by improper access control vulnerability. The attacker could exploit this vulnerability to access CLI by brute force attacks.This affects: ZXHN H168N V3.5.0_TY.T6

9.8 CVSS 3.1 Critical EPSS 1.0% · top 38.6%
9.8CVSS 3.1 base score, v2 5.0
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A ZTE product is impacted by improper access control vulnerability. The attacker could exploit this vulnerability to access CLI by brute force attacks.This affects: ZXHN H168N V3.5.0_TY.T6

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014864 Vendor Advisory
https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014864 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2018-7357ZTE ZXHN H168N router missing authentication for critical functionZTE ZXHN H168N firmware versions V2.2.0_PK1.2T5, V2.2.0_PK1.2T2, V2.2.0_PK11T7 and V2.2.0_PK11T expose a critical function without authentication (CW…EPSS 88%analysed8.8CVE-2018-7358ZTE ZXHN H168N router improper authentication allows unauthorized operationsZTE ZXHN H168N firmware versions V2.2.0_PK1.2T5, V2.2.0_PK1.2T2, V2.2.0_PK11T7 and V2.2.0_PK11T contain an improper change control flaw mapped to CWE…EPSS 90%analysed6.5CVE-2021-21735Zte zxhn h168n firmware vulnerabilityA ZTE product has an information leak vulnerability. Due to improper permission settings, an attacker with ordinary user permissions could exploit th…EPSS 0.93%6.5CVE-2021-21729Zte zxhn h168n firmware cross-site request forgery vulnerabilitySome ZTE products have CSRF vulnerability. Because some pages lack CSRF random value verification, attackers could perform illegal authorization oper…EPSS 0.38%

Source: NIST National Vulnerability Database (record CVE-2021-21730), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.