CVE-2025-34153
Hyland OnBase < 17.0.2.87 .NET Remoting TCP Channel Unauthenticated RCE
- State
- Published
- Severity
- 10.0 Critical
- Published
- Aug 13, 2025
- Updated
- May 15, 2026
- Reserved
- Apr 15, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 10.0 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | VulnCheck |
Weaknesses
- CWE-502 Deserialization of Untrusted Data
Affected Products
| Product | Versions |
|---|---|
OnBaseHyland Software |
|
References
- https://gist.github.com/VAMorales/32794cccc2195a935623a12ef32760dctechnical-descriptionexploit
- https://www.hyland.com/en/internal/onbase-unity-clientproduct
- https://support.hyland.com/r/OnBase/WorkView/Foundation-24.1/WorkView/Installation/Upgrade-Considerations/Upgrading-to-OnBase-Version-Foundation-24.1patch
- https://www.vulncheck.com/advisories/hyland-onbase-net-remoting-tcp-channel-unauthenticated-rcethird-party-advisory
- https://community.hyland.com/resources/bulletins-and-notices/210540-security-update-hyland-timer-service-bulletin-ob2025-02vendor-advisorymitigationpermissions-required
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