---
id: CVE-2025-11385
title: A vulnerability has been found in Tenda AC20 up to 16.03.08.12
summary: >-
  A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The affected
  element is the function sscanf of the file /goform/fast_setting_wifi_set. The
  manipulation of the argument timeZone leads to buffer overflow. The attack can
  be …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-119
  - CWE-120
vendor: tenda
product: ac20_firmware
affected:
  - ac20_firmware = 16.03.08.12
published: '2025-10-07'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T22:10:00.563'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-11385'
references:
  - url: 'https://github.com/cymiao1978/cve/blob/main/11.md'
    label: cna@vuldb.com
  - url: 'https://github.com/cymiao1978/cve/blob/main/11.md#poc'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/?ctiid.327312'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/?id.327312'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/?submit.664922'
    label: cna@vuldb.com
  - url: 'https://www.tenda.com.cn/'
    label: cna@vuldb.com
tags:
  - nvd
epss: 0.00802
epssPercentile: 0.55299
ingestedAt: '2026-10-08T22:11:53.788Z'
---

## Overview

A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The affected element is the function sscanf of the file /goform/fast_setting_wifi_set. The manipulation of the argument timeZone leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

## Affected

- `ac20_firmware = 16.03.08.12`

## Remediation

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