---
id: CVE-2025-52221
title: >-
  Tenda AC6 15.03.05.16_multi is vulnerable to Buffer Overflow in the formSetCfm
  function via the funcname, funcpara1, and funcpara2 parameters.
summary: >-
  Tenda AC6 15.03.05.16_multi is vulnerable to Buffer Overflow in the formSetCfm
  function via the funcname, funcpara1, and funcpara2 parameters.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
  - CWE-120
vendor: tenda
product: ac6_firmware
affected:
  - ac6_firmware = 15.03.05.16_multi
published: '2026-04-08'
updated: '2026-07-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-52221'
references:
  - url: >-
      https://github.com/faqiadegege/IoTVuln/blob/main/tendaAc6_formSetCfm_funcname_overflow/detail.md
    label: cve@mitre.org
  - url: >-
      https://github.com/xiaotea/iot-vulnerability-collection/blob/main/README.md
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00389
epssPercentile: 0.30286
ingestedAt: '2026-07-26T00:06:15.171Z'
---

## Overview

Tenda AC6 15.03.05.16_multi is vulnerable to Buffer Overflow in the formSetCfm function via the funcname, funcpara1, and funcpara2 parameters.

## Affected

- `ac6_firmware = 15.03.05.16_multi`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.