What’s Vulnerable › Vulnerabilities

CVE-2021-47726: NuCom 11N Wireless Router 5.07.90 Privilege Escalation via Configuration Backup

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-31 · updated 2026-06-17
• Weakness: CWE-522

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.

Affected products

• NuCom 11N Wireless Router: 5.07.90

References

• https://www.exploit-db.com/exploits/49634
• https://www.nucom.es
• https://www.vulncheck.com/advisories/nucom-n-wireless-router-privilege-escalation-via-configuration-backup
• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5629.php

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