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CVE-2026-16286 – Unauthenticated RCE via Unrestricted File Upload – TRtek Software Repository Manage

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Summary

CVE-2026-16286 is a critical unrestricted file upload vulnerability in TRtek’s Software Repository Management application. The flaw allows an unauthenticated remote attacker to upload a web shell to the server, resulting in full remote code execution. It carries a CVSS v3.1 base score of 9.8 (Critical).

Technical details

  • Root cause: The application (CWE-434: Unrestricted Upload of File with Dangerous Type) fails to properly validate or restrict the type of files submitted through its upload functionality.
  • Trigger conditions: An attacker submits a crafted file (e.g., a web shell) through the affected upload feature.
  • Attack vector: Network-based, no authentication (PR:N) or user interaction (UI:N) required, low attack complexity (AC:L).
  • Impact: Successful exploitation grants full remote code execution on the server, with high impact to confidentiality, integrity, and availability.

Affected software

  • TRtek Software Repository Management — all versions/builds prior to commit 2fb4acee.

Severity

  • CVSS v3.1 Base Score: 9.8 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Upgrade to a build of TRtek Software Repository Management that incorporates commit 2fb4acee or later; confirm with the vendor that the deployed build includes this fix.
  • If no patch is available: Restrict network access to the application to trusted internal networks or a VPN — do not expose the upload functionality directly to the internet; deploy a WAF rule to block uploads of executable file types (e.g., .php, .jsp, .asp, .aspx) or files with mismatched content-type/extension pairs; monitor upload directories for newly created executable files and review web server logs for suspicious POST requests.

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.

  • Raw response body: class="program-adi">TRtek Web HBYS<, <h3>TRtek Web HBYS</h3>, TRtek Web HBYS, Kurumların ihtiyaçlarını karşılamak amacıyla geliştirilmiştir.

References

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1

Map your entire attack surface (continously)

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2

Monitor for new CVEs

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Identify Potential External Exposures

Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

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By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

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Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

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