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CVE-2026-61516 – Unauthenticated Admin Credential Disclosure – Netis NX10 (v4.0.1.5808 / v3.0.0.4142

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Summary

CVE-2026-61516 is a critical insufficiently-protected-credentials vulnerability (CWE-522) affecting the Netis NX10 router. An unauthenticated attacker can query a diagnostic endpoint in the device’s web management interface to retrieve the administrator password in cleartext, then replay it to obtain a fully authenticated admin session. The flaw carries a CVSS score of 9.3 (v4.0) / 9.8 (v3.1), reflecting network-based, low-complexity, no-privilege, no-interaction exploitation.

Technical details

  • Root cause: the sysinfo diagnostic action on the NX10 web management interface returns the stored administrator password in its response, without requiring any authentication or valid session.
  • Trigger: a simple unauthenticated HTTP GET request to the sysinfo endpoint is sufficient to disclose the credential.
  • Attack vector: network — reachable over the LAN by default, and over the WAN if remote management is enabled on the device.
  • Impact: the disclosed password can be submitted directly to the device’s login handler to establish a fully authenticated administrator session, giving an attacker complete control of the router (confidentiality, integrity, and availability impact all rated High).
  • Note: rotating the admin password alone does not remediate the issue, since the endpoint will simply disclose the new value on the next request.

Affected software

  • Netis NX10 firmware version 4.0.1.5808
  • Netis NX10 firmware version 3.0.0.4142

Severity

  • CVSS v3.1 Base Score: 9.8 (Critical) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVSS v4.0 Base Score: 9.3 (Critical) — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Mitigation and recommended actions

  • Immediate: No vendor-confirmed patch is currently available for the affected NX10 firmware versions; check Netis Systems’ official channels for updated firmware before deploying or continuing to use these versions.
  • Workarounds: Disable remote/WAN-based management on affected devices to limit exposure to the local network; restrict access to the device’s web management interface to trusted hosts only (e.g., via firewall/ACL rules); place management interfaces behind a VPN; monitor for unsolicited requests to diagnostic/CGI endpoints on the device.
  • Note that changing the administrator password alone does not mitigate the vulnerability, as the endpoint continues to expose the current credential value.

How IONIX identifies potentially affected assets

IONIX matches the following signals against data already collected when it crawled the asset; identifying the technology sends no request beyond that crawl.

  • Response header Server: netis
  • Page title: Shock&Innovation!! netis setup, netis ... Router, netis 광대역 라우터 관리 패널

References

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