Vulnerability details
CVE-2021-47726
NuCom 11N Wireless Router
NuCom 11N Wireless Router 5.07.90 Privilege Escalation via Configuration Backup
CVSS 4.0
8.7High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | 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 |
| 7.5High | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| NuCom | NuCom 11N Wireless Router | 5.07.90 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://www.exploit-db.com/exploits/49634 exploit
- https://www.nucom.es product
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5629.php third-party-advisory
- https://www.vulncheck.com/advisories/nucom-n-wireless-router-privilege-escalation-via-configuration-backup third-party-advisory
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Details
- Published
- 2025-12-31
- Last updated
- 2026-01-02
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.3%
Probability of exploitation in 30 days
23.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-522Insufficiently Protected Credentials