Vulnerability in Nucom 11n Wireless Router
CVE-2021-47726
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (20.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Nucom 11n Wireless Router — versions 5.07.90
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/49634 (exploit)
- www.nucom.es (product)
- www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5629.php (third-party-advisory)
- www.vulncheck.com/advisories/nucom-n-wireless-router-privilege-escalation-via-c… (third-party-advisory)
Frequently asked questions
- What is CVE-2021-47726?
- CVE-2021-47726 is a high-severity vulnerability in Nucom 11n Wireless Router, classified under Insufficiently Protected Credentials. CVSS score: 7.5/10. Published 2025-12-31.
- How severe is CVE-2021-47726?
- High severity. CVSS v3 base score is 7.5 out of 10.