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9.3

BarTender 2010/2016/2019 lets attackers run code remotely

CVE-2026-25550 · published 5 months ago
Summary

The BarTender labeling software versions from 2010, 2016, and 2019 expose a network service that anyone can talk to without a password. Because of this, a remote attacker could cause the program to execute their own code, steal files, or capture credentials, depending on the rights of the service account. Upgrade to BarTender version 12.0.1 or later to close the problem.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
seagull software, llc. bartender 2010 <= 10.1 R4
seagull software, llc. bartender 2016 <= R9
seagull software, llc. bartender 2019 <= R10
Original advisory text
Seagull Software BarTender Unauthenticated RCE via .NET Remoting Service
Seagull Software BarTender 2010, 2016, and 2019 contain an unauthenticated remote code execution vulnerability in the .NET Remoting service exposed on TCP port 7375 via BtSystem.Service.exe. The service registers an unauthenticated singleton endpoint — BarTenderSystem for BarTender 2016 <= R9, and DataServiceSingleton for BarTender 2019 <= R10 — configured with BinaryServerFormatterSinkProvider and TypeFilterLevel set to Full. An unauthenticated remote attacker can exploit .NET Remoting object unmarshalling to read or write arbitrary files on the server using the .NET WebClient class, or coerce NTLMv2 authentication by supplying a UNC path to an attacker-controlled server, enabling sensitive credential disclosure, remote code execution, or lateral movement depending on service account privileges and network environment. The service runs in the context of NT AUTHORITY\\SYSTEM. This vulnerability is corrected in BarTender 12.0.1. Users of affected releases should upgrade to BarTender 12.0.1 or later.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker full control
Severity
9.3 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-306Missing Authentication for Critical Function
CWE-502Deserialization of Untrusted Data
Timeline
Published4 Jun 2026
Updated4 Nov 2026
First seen4 Jun 2026
Sources
CVE-2026-25550 · NVD
CVE-2026-25550 · MITRE
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