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2 vulnerabilities found for OnBase Workflow Timer Service by Hyland

CVE-2026-26221 (GCVE-0-2026-26221)

Vulnerability from cvelistv5 – Published: 2026-02-13 15:21 – Updated: 2026-02-18 15:36
VLAI?
Title
Hyland OnBase Timer Services Unauthenticated .NET Remoting RCE
Summary
Hyland OnBase contains an unauthenticated .NET Remoting exposure in the OnBase Workflow Timer Service (Hyland.Core.Workflow.NTService.exe). An attacker who can reach the service can send crafted .NET Remoting requests to default HTTP channel endpoints on TCP/8900 (e.g., TimerServiceAPI.rem and TimerServiceEvents.rem for Workflow) to trigger unsafe object unmarshalling, enabling arbitrary file read/write. By writing attacker-controlled content into web-accessible locations or chaining with other OnBase features, this can lead to remote code execution. The same primitive can be abused by supplying a UNC path to coerce outbound NTLM authentication (SMB coercion) to an attacker-controlled host.
Severity ?
10 (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
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Hyland OnBase Workflow Timer Service Affected: 8.0 , ≤ 17.0.x (semver)
Create a notification for this product.
Credits
Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp. VulnCheck
Show details on NVD website
To clipboard 

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CVE-2026-26221 (GCVE-0-2026-26221)

Vulnerability from nvd – Published: 2026-02-13 15:21 – Updated: 2026-02-18 15:36
VLAI?
Title
Hyland OnBase Timer Services Unauthenticated .NET Remoting RCE
Summary
Hyland OnBase contains an unauthenticated .NET Remoting exposure in the OnBase Workflow Timer Service (Hyland.Core.Workflow.NTService.exe). An attacker who can reach the service can send crafted .NET Remoting requests to default HTTP channel endpoints on TCP/8900 (e.g., TimerServiceAPI.rem and TimerServiceEvents.rem for Workflow) to trigger unsafe object unmarshalling, enabling arbitrary file read/write. By writing attacker-controlled content into web-accessible locations or chaining with other OnBase features, this can lead to remote code execution. The same primitive can be abused by supplying a UNC path to coerce outbound NTLM authentication (SMB coercion) to an attacker-controlled host.
Severity ?
10 (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
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Hyland OnBase Workflow Timer Service Affected: 8.0 , ≤ 17.0.x (semver)
Create a notification for this product.
Credits
Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp. VulnCheck
Show details on NVD website
To clipboard 

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