CVE-2026-40551: Binsoft Mpcrm

High severity, CVSS 8.4. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Binsoft Mpcrm: up to and including 25.2.4
• Binsoft Mpfaktura: up to and including 26.4.9
• Binsoft Mpfirma: up to and including 26.4.9
• Binsoft Mpfirma ERP: up to and including 26.4.9
• Binsoft Mpgabinet: up to and including 23.12.19
• Binsoft Mppos: up to and including 25.2.4
• Binsoft Mpsekretariat: up to and including 25.2.4
• Binsoft Mpwarsztat: up to and including 20.4.28

Published 2026-04-28. Last modified 2026-09-30.