---
id: CVE-2025-12211
title: A security flaw has been discovered in Tenda O3 1.0.0.10(2478)
summary: >-
  A security flaw has been discovered in Tenda O3 1.0.0.10(2478). Affected by
  this issue is the function SetValue/GetValue of the file /goform/setDmzInfo.
  The manipulation of the argument dmzIP results in stack-based buffer overflow.
  It is…
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-121
vendor: tenda
product: o3_firmware1.0.0.10(2478)
affected:
  - o3_firmware1.0.0.10(2478)
published: '2025-10-27'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T11:10:00.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-12211'
references:
  - url: >-
      https://github.com/noahze01/IoT-vulnerable/blob/main/Tenda/O3v2.0/setDmzInfo.md
    label: cna@vuldb.com
  - url: 'https://vuldb.com/?ctiid.329881'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/?id.329881'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/?submit.673265'
    label: cna@vuldb.com
  - url: 'https://www.tenda.com.cn/'
    label: cna@vuldb.com
  - url: >-
      https://github.com/noahze01/IoT-vulnerable/blob/main/Tenda/O3v2.0/setDmzInfo.md
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00836
epssPercentile: 0.56418
ingestedAt: '2026-10-08T11:31:27.615Z'
---

## Overview

A security flaw has been discovered in Tenda O3 1.0.0.10(2478). Affected by this issue is the function SetValue/GetValue of the file /goform/setDmzInfo. The manipulation of the argument dmzIP results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

## Affected

- `o3_firmware1.0.0.10(2478)`

## Remediation

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