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CVE-2026-40551— Use of Client-Side Authentication in multiple BinSoft products

Quick assessment

Affected
BinSoft mpGabinet
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

BinSoft mpGabinet是波兰BinSoft公司的一个医疗诊所管理系统。 BinSoft mpGabinet 23.12.19及之前版本存在安全漏洞，该漏洞源于执行客户端身份验证，可能导致攻击者通过操作应用程序二进制文件绕过登录验证过程，以任意用户身份进行身份验证。

CVSS 8.4 · High EPSS 0.19% · P8

Affected Version Matrix 8

VendorProduct Version RangeStatus
BinSoft mpCRM ≤ 25.2.4 affected
BinSoft mpFaktura ≤ 26.4.9 affected
BinSoft mpFirma ≤ 26.4.9 affected
BinSoft mpFirma ERP ≤ 26.4.9 affected
BinSoft mpGabinet ≤ 23.12.19 affected
BinSoft mpPOS ≤ 25.2.4 affected
BinSoft mpSekretariat ≤ 25.2.4 affected
BinSoft mpWarsztat ≤ 20.4.28 affected
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I. Basic Information for CVE-2026-40551

Vulnerability Information
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Vulnerability Title
Use of Client-Side Authentication in multiple BinSoft products
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple BinSoft products perform client-side authentication. An attacker with access to any application instance connected to the backend server can bypass the login verification process by manipulating the application binary and authenticate as an arbitrary user. The described issue affects all published versions. The vendor stated that this issue is a direct result of the architecture model in which the software is distributed, and that it will be mitigated with a corrected installation manual.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用客户端的认证机制
Source: CVE Program / CVE List V5
Vulnerability Title
BinSoft mpGabinet 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
BinSoft mpGabinet是波兰BinSoft公司的一个医疗诊所管理系统。 BinSoft mpGabinet 23.12.19及之前版本存在安全漏洞，该漏洞源于执行客户端身份验证，可能导致攻击者通过操作应用程序二进制文件绕过登录验证过程，以任意用户身份进行身份验证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
BinSoft mpGabinet 0 ~ 23.12.19 -
BinSoft mpFirma 0 ~ 26.4.9 -
BinSoft mpFaktura 0 ~ 26.4.9 -
BinSoft mpFirma ERP 0 ~ 26.4.9 -
BinSoft mpSekretariat 0 ~ 25.2.4 -
BinSoft mpPOS 0 ~ 25.2.4 -
BinSoft mpCRM 0 ~ 25.2.4 -
BinSoft mpWarsztat 0 ~ 20.4.28 -

II. Public POCs for CVE-2026-40551

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III. Intelligence Information for CVE-2026-40551

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Security Blog Posts for CVE-2026-40551 (1)

Vendor Pages for CVE-2026-40551 (1)

Other References for CVE-2026-40551 (1)

Same Patch Batch · BinSoft · 2026-04-28 · 3 CVEs total

CVE-2026-40550 6.9 MEDIUM Privilege Escalation in multiple BinSoft products
CVE-2026-40552 4.7 MEDIUM Remote Code Execution in multiple BinSoft products

IV. Related Vulnerabilities

Same product: mpGabinet
Same vendor: BinSoft
Same weakness: CWE-603

V. Comments for CVE-2026-40551

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