---
id: "CVE-2026-114268"
kind: "vulnerability"
aliases: ["CVE-2026-114268"]
title: "Tenda BE3L Pro router: remote buffer overflow in Wi-Fi setup takes control"
severity: "critical"
cvss: 9.9
epss: 0.00511
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Tenda BE3L Pro", "fixed": [], "affected": "= 16.03.60.62", "ecosystem": "firmware"}]
ecosystems: ["firmware"]
tags: ["be3l-pro", "buffer-overflow", "home-network", "infrastructure", "poc-public", "routers", "tenda"]
not_affected_if: ["different-firmware-version", "web-admin-disabled-from-wan"]
published_at: "2026-10-21T19:17:00+00:00"
first_seen_at: "2026-10-23T21:57:29+00:00"
updated_at: "2026-10-24T13:15:54+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114268", "first_seen_at": "2026-10-23T21:57:29+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-23T22:26:16+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-114268", "first_seen_at": "2026-10-24T13:15:54+00:00"}]
---

# Tenda BE3L Pro router: remote buffer overflow in Wi-Fi setup takes control

The Tenda BE3L Pro router firmware version 16.03.60.62 has a buffer overflow in the web handler formWifiBasicSet at /goform/WifiBasicSet, triggered by the security_5g argument. A remote attacker can send a crafted request to overflow memory, and a public exploit has been published.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- firmware:Tenda BE3L Pro affected = 16.03.60.62 fixed ?

## How to check

Check the firmware version under the router admin page or system info; 16.03.60.62 is affected.

## Fix

No fixed version is named in the sources; check the Tenda support site for a newer firmware.

## Timeline

- 2026-10-23T21:57:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-114268
- 2026-10-23T22:26:16+00:00 analyst — VulDB VDB-424700 (submitter tmzhou) confirms only 16.03.60.62 affected, remote, PoC on GitHub (link not shown publicly), no vendor patch or mitigation known. Tenda has no advisory I could find. Exploitation in the wild not reported. Auth: CVSS PR:L suggests a logged-in admin session is needed; not confirmed by a primary source. Not read: the PoC repo itself.
- 2026-10-24T13:15:54+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-114268

## Documents

- [advisory] VulDB VDB-424700: Tenda BE3L Pro formWifiBasicSet security_5g overflow https://vuldb.com/vuln/424700
- [mentions] Related write-up: same WifiBasicSet security_5g overflow in Tenda AC8 v4 https://github.com/CyberJ3ff/IOT/blob/main/tenda/tenda%20AC8%20v4%20V16.03.34.06/detail.md

## From the sources

A flaw has been found in Tenda BE3L Pro 16.03.60.62. Affected by this vulnerability is the function formWifiBasicSet of the file /goform/WifiBasicSet. This manipulation of the argument security_5g causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been published and may be used.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_