CVE-2021-47726

HIGH

NuCom 11N Wireless Router 5.07.90 - Privilege Escalation

Title source: llm

Description

NuCom 11N Wireless Router 5.07.90 contains a privilege escalation vulnerability that allows non-privileged users to access administrative credentials through the configuration backup endpoint. Attackers can send a crafted HTTP GET request to the backup configuration page with a specific cookie to retrieve and decode the admin password in Base64 format.

Exploits (1)

exploitdb WORKING POC

by LiquidWorm · textwebappshardware

https://www.exploit-db.com/exploits/49634

View Code ZIP pw:eip

References (4)

[Various Sources] https://www.nucom.es

[Exploit, Third Party Advisory] https://www.exploit-db.com/exploits/49634

[Third Party Advisory] https://www.vulncheck.com/advisories/nucom-n-wireless-router-privilege-escalation-via-configuration-backup

[Third Party Advisory] https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5629.php

Scores

CVSS v3 7.5

EPSS 0.0012

EPSS Percentile 30.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Classification

CWE

CWE-522

Status draft

Timeline

Published Dec 31, 2025

Tracked Since Feb 18, 2026