NuCom 11N Wireless Router 5.07.90 Privilege Escalation via Configuration Backup
Priority HIGH 77CWE-522Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-522.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00303 23rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-47726
- 2026-10-03 Alias added: GHSA-f57r-vv46-fp7w
References
Exploit 1
Other 1
More NuCom vulnerabilities
- TI-2018-06315 NuCom WR644GACV devices before STA006 allow an attacker to download the configuration… CVSS 3.0CRITICAL 9.8
- TI-2025-04831 NuCom NC-WR744G Console Application hard-coded credentials CVSS 4.0MEDIUM 5.3
Sources
- CVE-2021-47726 · CVE Program
- CVE-2021-47726 · NVD
- FIRST EPSS
- GHSA-f57r-vv46-fp7w · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences