---
id: CVE-2026-117082
title: >-
  An authentication bypass vulnerability in the Universal Plug and Play (UPnP)
  framework of the Sercomm AOT-4221SR 4.6 Dual Band GPON ONU device allows an
  attackers to execute arbitrary SOAP requests via port 5555
summary: >-
  An authentication bypass vulnerability in the Universal Plug and Play (UPnP)
  framework of the Sercomm AOT-4221SR 4.6 Dual Band GPON ONU device allows an
  attackers to execute arbitrary SOAP requests via port 5555. This flaw exposes
  15 adm…
severity: none
published: '2026-11-02'
updated: '2026-11-02'
sourceUpdated: '2026-11-02T19:24:42.448Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-117082'
references:
  - url: 'http://sercomm.com'
  - url: >-
      https://github.com/dewcode91/security-research/blob/main/CVE-2026-117082.md
tags:
  - cve.org
epss: 0.00198
epssPercentile: 0.09695
ingestedAt: '2026-11-05T19:30:42.792Z'
---

## Overview

An authentication bypass vulnerability in the Universal Plug and Play (UPnP) framework of the Sercomm AOT-4221SR 4.6 Dual Band GPON ONU device allows an attackers to execute arbitrary SOAP requests via port 5555. This flaw exposes 15 administrative, WAN, LAN, and firewall services without requiring credentials, enabling attackers to modify core routing tables, alter DNS servers, remove firewall rules, and completely compromise the network.

## Remediation

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