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CVE-2026-108070 – Improper Access Control (Unauthenticated Internal Resource Access) – TSplus Remote

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Summary

CVE-2026-108070 is an improper access control vulnerability (CWE-552, files or directories accessible to external parties) in the TSplus Remote Access web server. An unauthenticated remote attacker can reach internal resources by sending manipulated paths to the /socket.io/JWN/ endpoint. The CVE record rates it High (CVSS v4.0 base score 8.7).

Technical details

  • Root cause: Improper access control in the TSplus Remote Access web server. Manipulated paths sent to the /socket.io/JWN/ endpoint expose internal resources.
  • Trigger conditions: The attacker needs no authentication, no privileges and no user interaction.
  • Attack vector: Network, low complexity. A remote attacker sends crafted requests to the web server.
  • Impact: High loss of confidentiality, because internal resources become accessible to an unauthenticated party. The CVE vector records no integrity or availability impact.
  • The record maps to CAPEC-150 (Collect Data from Common Resource Locations) and CAPEC-639 (Probe System Files).
  • The issue was published together with other TSplus Remote Access vulnerabilities in a single INCIBE-CERT advisory. The finder is credited as Javier Medina Munuera.

Affected software

  • TSplus Remote Access 19.20.3.10

Severity

  • CVSS v4.0 base score 8.7 (High): CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  • The CVE record provides a CVSS v4.0 score only. It gives no CVSS v3.1 score.

Mitigation and recommended actions

  • Immediate: The CVE record says the TSplus team fixed the vulnerabilities in the latest version. It does not name a specific fixed build. Upgrade TSplus Remote Access to the latest release available from TSplus and confirm the installed version is no longer 19.20.3.10.
  • If you cannot upgrade immediately: No vendor workaround is documented in the sources reviewed. Restrict network access to the TSplus web server to trusted sources where possible, and monitor web server logs for unusual requests to /socket.io/JWN/.

References

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