CVE-2021-47726
NuCom 11N Wireless Router 5.07.90 Privilege Escalation via Configuration Backup
- State
- Published
- Severity
- 8.7 High
- Published
- Dec 31, 2025
- Updated
- Jan 2, 2026
- Reserved
- Dec 7, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-522 Insufficiently Protected Credentials
Affected Products
| Product | Versions |
|---|---|
NuCom 11N Wireless RouterNucom |
|
References
- ExploitDB-49634exploit
- NuCom Vendor Homepageproduct
- Zero Science Lab Disclosure (ZSL-2021-5629)third-party-advisory
- VulnCheck Advisory: NuCom 11N Wireless Router 5.07.90 Privilege Escalation via Configuration Backupthird-party-advisory
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