CVE-2021-47726 | THREATINT

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.

PUBLISHED Reserved 2025-12-07 | Published 2025-12-31 | Updated 2026-01-02 | Assigner VulnCheck

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem types

Insufficiently Protected Credentials

Product status

5.07.90

affected

Credits

LiquidWorm as Gjoko Krstic of Zero Science Lab finder

References

www.exploit-db.com/exploits/49634 (ExploitDB-49634) exploit

www.nucom.es (NuCom Vendor Homepage) product

www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5629.php (Zero Science Lab Disclosure (ZSL-2021-5629)) third-party-advisory

www.vulncheck.com/...ege-escalation-via-configuration-backup (VulnCheck Advisory: NuCom 11N Wireless Router 5.07.90 Privilege Escalation via Configuration Backup) third-party-advisory

cve.org (CVE-2021-47726)

nvd.nist.gov (CVE-2021-47726)

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