Seagull Software BarTender Unauthenticated RCE via .NET Remoting Service_CVE-2026-25550

{
    "lastseen": "",
    "description": "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 \u2014 BarTenderSystem for BarTender 2016 <= R9, and DataServiceSingleton for BarTender 2019 <= R10 \u2014 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.",
    "published": "2026-06-04T17:13:13.740Z",
    "modified": "2026-06-04T17:50:01.515Z",
    "type": "cve",
    "title": "Seagull Software BarTender Unauthenticated RCE via .NET Remoting Service",
    "source": "VulnCheck",
    "references": "https://portal.seagullscientific.com/downloads/bartender\nhttps://www.vulncheck.com/advisories/seagull-software-bartender-unauthenticated-rce-via-net-remoting-service",
    "id": "CVE-2026-25550",
    "bulletinFamily": "",
    "cwe": [
        "CWE-306",
        "CWE-502"
    ],
    "cvelist": null,
    "sourceData": "Seagull Software, LLC. BarTender 2010 0\nSeagull Software, LLC. BarTender 2016 0\nSeagull Software, LLC. BarTender 2019 0",
    "sourceHref": "",
    "cvss": {
        "score": 9.3,
        "severity": "CRITICAL",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "BarTender 2010",
    "version": "0",
    "vendor": "Seagull Software, LLC.",
    "ai_description": "Unauthenticated remote code execution vulnerability in the .NET Remoting service",
    "ai_severity": "Critical",
    "ai_vendor": "Seagull Software, LLC.",
    "ai_product": "BarTender",
    "ai_version": "2010, 2016, 2019",
    "ai_score": 9.3
}