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Security Database

CVE

CWE

Training

CVE-2025-34153

Published: Aug 13, 2025

Modified: May 15, 2026

PUBLISHED

Description

Hyland OnBase versions prior to 17.0.2.87 (other versions may be affected) are vulnerable to unauthenticated remote code execution via insecure deserialization on the .NET Remoting TCP channel. The service registers a listener on port 6031 with the URI endpoint TimerServer, implemented in Hyland.Core.Timers.dll. This endpoint deserializes untrusted input using the .NET BinaryFormatter, allowing attackers to execute arbitrary code under the context of NT AUTHORITY\SYSTEM.

Vendor	Product	Versions
Hyland Software	OnBase	affected `0 - < 17.0.2.87` unaffected `24.1`

Weaknesses (CWE)

References

https://gist.github.com/VAMorales/32794cccc2195a935623a12ef32760dc

technical-description

exploit

https://www.hyland.com/en/internal/onbase-unity-client

product

https://support.hyland.com/r/OnBase/WorkView/Foundation-24.1/WorkView/Installation/Upgrade-Considerations/Upgrading-to-OnBase-Version-Foundation-24.1

patch

https://www.vulncheck.com/advisories/hyland-onbase-net-remoting-tcp-channel-unauthenticated-rce

third-party-advisory

https://community.hyland.com/resources/bulletins-and-notices/210540-security-update-hyland-timer-service-bulletin-ob2025-02

vendor-advisory

mitigation

permissions-required

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