VulnSocial

CVE-2026-25550Disclosure

LOWCVSS 9.3 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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 — 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.

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0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-306CWE-502

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 8 mentions across 4 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 3 signals
  • Technical details provided in 8 signals
  • Disclosure: 4 classified signals
  • General: 1 classified signal
  • Peaked 3d ago at 3 mentions (2026-06-04); latest day: 1
  • 8 total mentions across 4 days

Deep dive

Activity timeline8 mentions / 4d
01223Mentions · 2026-06-04: 3Mentions · 2026-06-05: 3Mentions · 2026-06-08: 1Mentions · 2026-06-26: 1Patch / Workaround · 2026-06-04: 1Patch / Workaround · 2026-06-05: 1Patch / Workaround · 2026-06-08: 1Technical Details · 2026-06-04: 3Technical Details · 2026-06-05: 3Technical Details · 2026-06-08: 1Technical Details · 2026-06-26: 106-0406-0506-0806-26
Signal classification3 categories
Disclosure
450.0%
Patch
337.5%
General
112.5%
Referenced assets6 URLs
Classification over time
DateTotalLabels
2026-06-043
Disclosure2Patch1
2026-06-053
Disclosure2Patch1
2026-06-081
Patch1
2026-06-261
General1
Full discourse8 posts
  • Andre Gironda@AndreGironda
    Disclosure

    CVE-2026-25550 Seagull Software BarTender 2010, 2016, and 2019 contain an unauthenticated remote code execution RCE vulnerability in the .NET Remoting service exposed on TCP port 7375 via BtSystem.Service.exe -- https://www.vulncheck.com/advisories/seagull-software-bartender-unauthenticated-rce-via-net-remoting-service

    Post summary

    An advisory announces an unauthenticated remote code execution vulnerability in Seagull Software BarTender that exploits its .NET Remoting service, with no mention of PoC or active exploitation.

    01020121
    3.8K followersView on X
  • Orizon@OrizonCyber
    Patch

    🚨 CVE-2026-25550 — CVSS 9.8/10 ██████████ Seagull Software BarTender 2010, 2016, and 2019 contain an unauthenticated remote code execution vulnerability in the... Severity: CRITICAL Patch now. #cybersecurity #CVE https://t.co/uBUkYgnvP1

    Post summary

    CVE-2026-25550 is a critical unauthenticated remote code execution vulnerability in Seagull Software BarTender, with a CVSS score of 9.8/10; a patch is available and recommended.

    1000096
    54 followersView on X
  • IntegSec@integ_sec
    General

    CVE-2026-25550: Seagull BarTender Unauthenticated Remote Code Execution - What It Means for Your Business and How to Respond https://hubs.li/Q04mQcCt0

    Post summary

    The text references CVE-2026-25550 as an unauthenticated RCE in Seagull BarTender but does not provide evidence of PoC, exploitation, patching, or debunking.

    0000036
    31 followersView on X
  • Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters
    Patch

    CVE-2026-25550 - Critical RCE in Seagull BarTender. Unpatched flaw in .NET Remoting service on TCP 7375. CVSS 9.8. No fix available. Disable service or restrict network access immediately. #CVE #seagull #infosec FREE INFO: https://www.valtersit.com/cve/CVE-2026-25550/

    Post summary

    The post advertises a critical RCE vulnerability (CVE‑2026‑25550) in Seagull BarTender, notes that no patch exists, and urges disabling the .NET Remoting service or network‑level restriction as a workaround. Technical details and severity score are provided, but no exploit code or active exploitation evidence is cited.

    0000057
    921 followersView on X
  • Cyber Threat Observatory | Alan Turing Institute@TuringCyberObs
    Disclosure

    CVE-2026-25550 (Seagull Software BarTender) is a critical unauthenticated RC. Attackers can abuse unsafe .NET Remoting to execute code with SYSTEM privileges. See full analysis: https://github.com/alan-turing-institute/cyber-threat-observatory/blob/main/reports/2026-06-04/TIER_2_CVE-2026-25550.md #CyberSecurity #DPI #RCE #EnterpriseSecurity #NetworkSecurity

    Post summary

    The post announces a critical RCE vulnerability (CVE‑2026‑25550) in Seagull BarTender that permits unauthenticated remote code execution with SYSTEM privileges, referencing a detailed analysis but providing no PoC, exploit code, or patch details.

    0000046
    51 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-25550 Unauthenticated Remote Code Execution in Seagull Software BarTender 2010, 2016, and 2019 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-25550

    Post summary

    The post announces CVE-2026-25550, an unauthenticated remote code execution flaw affecting Seagull Software BarTender versions 2010, 2016, and 2019, and points to a vulnerability details page.

    0000044
    4.0K followersView on X
  • DFIR Lab@DFIR_Lab
    Patch

    🚨 CRITICAL: CVE-2026-25550 (CVSS 9.8) Seagull BarTender 2010/2016/2019 - Unauthenticated RCE via .NET Remoting (TCP 7375). Runs as SYSTEM. Patch immediately or disable service. #CVE #Vulnerability #PatchNow #ThreatIntel #DFIR https://t.co/5V2hL6KaV2

    Post summary

    The tweet announces a critical CVE-2026-25550 in Seagull BarTender with unauthenticated RCE and urges immediate patching.

    0000079
    39 followersView on X
  • ThreatCluster@threatcluster
    Disclosure

    Two vulnerabilities CVE-2026-25550 and CVE-2026-25551 in Seagull BarTender 2010 to 2021 allow unauthenticated remote code execution and privilege escalation via a .NET Remoting service on TCP 7375, VulnCheck reported. https://threatcluster.io/cluster/seagull-software-bartender-vulnerabilities-enable-rce-and-pr-14d85940

    Post summary

    The post announces two CVEs in Seagull BarTender that enable unauthenticated remote code execution and privilege escalation via .NET Remoting on TCP 7375; no proof‑of‑concept, exploit code, patch, or active exploitation details are provided.

    0000046
    300 followersView on X

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