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2 vulnerabilities found for BarTender 2021 by Seagull Software, LLC.
CVE-2026-25551 (GCVE-0-2026-25551)
Vulnerability from nvd – Published: 2026-06-04 17:20 – Updated: 2026-09-02 16:23
VLAI
EPSS
VEX
Title
Seagull Software BarTender Deserialization Privilege Escalation via .NET Remoting Service
Summary
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 surface to local access only. The endpoint is configured with BinaryServerFormatterSinkProvider and TypeFilterLevel set to Full. A low-privileged local attacker can send YSoSerial.NET-generated BinaryFormatter payloads to the localhost-bound endpoint to achieve code execution as NT AUTHORITY\\\\SYSTEM. The vulnerability was corrected in BarTender 12.1, released on August 14, 2026. Users should upgrade to BarTender 12.1 or later.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 18:27 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://trust.seagullsoftware.com/?tcuUid=55ed135… | vendor-advisorypatch |
| https://gist.github.com/VAMorales/dde5b1c0415a850… | technical-descriptionexploit |
| https://portal.seagullscientific.com/downloads/ba… | product |
| https://www.vulncheck.com/advisories/seagull-soft… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Seagull Software, LLC. | BarTender 2021 |
Affected:
R1 , ≤ 12.0.1
(custom)
|
Date Public
2026-06-03 00:00
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CVE-2026-25551 (GCVE-0-2026-25551)
Vulnerability from cvelistv5 – Published: 2026-06-04 17:20 – Updated: 2026-09-02 16:23
VLAI
EPSS
VEX
Title
Seagull Software BarTender Deserialization Privilege Escalation via .NET Remoting Service
Summary
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 surface to local access only. The endpoint is configured with BinaryServerFormatterSinkProvider and TypeFilterLevel set to Full. A low-privileged local attacker can send YSoSerial.NET-generated BinaryFormatter payloads to the localhost-bound endpoint to achieve code execution as NT AUTHORITY\\\\SYSTEM. The vulnerability was corrected in BarTender 12.1, released on August 14, 2026. Users should upgrade to BarTender 12.1 or later.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 18:27 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://trust.seagullsoftware.com/?tcuUid=55ed135… | vendor-advisorypatch |
| https://gist.github.com/VAMorales/dde5b1c0415a850… | technical-descriptionexploit |
| https://portal.seagullscientific.com/downloads/ba… | product |
| https://www.vulncheck.com/advisories/seagull-soft… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Seagull Software, LLC. | BarTender 2021 |
Affected:
R1 , ≤ 12.0.1
(custom)
|
Date Public
2026-06-03 00:00
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