CVE-2026-25551 Seagull Software BarTender Deserialization Privilege Escalation via .NET Remoting Service

Seagull Software BarTender 2021 R1 through 12.0.1 contains an insecure deserialization vulnerability that allows low-privileged local users to escalate privileges. The DataServiceSingleton .NET Remoting endpoint is bound to localhost on TCP port 7375 via BtSystem.Service.exe, limiting the attack...

CVE-2026-25550

Seagull Software BarTender 2010, 2016, and 2019 expose an unauthenticated .NET Remoting service on TCP port 7375 (BtSystem.Service.exe). BarTenderSystem (BarTender 2016 ≤ R9) and DataServiceSingleton (BarTender 2019 ≤ R10) are registered as unauthenticated singleton endpoints configured with Bina...