PT-2025-54420 · Nucom · Nucom 11N Wireless Router

Published 2025-12-31 · Updated 2026-01-01 · CVE-2021-47726

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions NuCom 11N Wireless Router version 5.07.90

Description A flaw exists that allows users without administrative privileges to gain access to administrative credentials. This is achieved by sending a specially crafted HTTP GET request to the configuration backup page. The request leverages a specific cookie to retrieve and decode the admin password, which is encoded in Base64 format. The affected endpoint is a configuration backup page. The vulnerable component is the handling of the cookie during the backup process.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, restrict access to the configuration backup page.

Exploit

Fix

LPE

Insufficiently Protected Credentials

Weakness Enumeration

CWE-522

Related Identifiers

CVE-2021-47726

Affected Products

Nucom 11N Wireless Router

References · 7

• 🔥 https://exploit-db.com/exploits/49634 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47726 · Security Note
• https://nucom.es · Note
• https://twitter.com/CVEnew/status/2006495392699957513 · Twitter Post
• https://zeroscience.mk/en/vulnerabilities/ZSL-2021-5629.php · Note
• https://vulncheck.com/advisories/nucom-n-wireless-router-privilege-escalation-via-configuration-backup · Note
• https://twitter.com/RedPacketSec/status/2006521558072729931 · Twitter Post