CVE-2021-47726

HIGH

NuCom 11N Wireless Router 5.07.90 - Privilege Escalation

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47726. PoCs published by LiquidWorm.

AI-analyzed exploit summary This exploit demonstrates a privilege escalation vulnerability in NuCom 11N Wireless Router firmware versions 5.07.90 and below. It retrieves the admin password in Base64-encoded form via an unauthenticated HTTP GET request to the configuration backup endpoint.

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

This exploit demonstrates a privilege escalation vulnerability in NuCom 11N Wireless Router firmware versions 5.07.90 and below. It retrieves the admin password in Base64-encoded form via an unauthenticated HTTP GET request to the configuration backup endpoint.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: NuCom 11N Wireless Router (5.07.90_multi_NCM01, 5.07.89_multi_NCM01, 5.07.72_multi_NCM01)
No auth needed
Prerequisites: Network access to the router's web interface (typically on port 8080)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/49634
Various Sources product
https://www.nucom.es
Third Party Advisory third-party-advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5629.php

Scores

CVSS v3 7.5
EPSS 0.0027
EPSS Percentile 18.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-522
Status published
Products (1)
Nucom/NuCom 11N Wireless Router 5.07.90
Published Dec 31, 2025
Tracked Since Feb 18, 2026