CVE-2026-40551
Full vulnerability record from the local CVENow database.
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.
Severity
HIGH
CVSS score
8.4
(v4.0)
Vulnerability status
Deferred
Source identifier
Published
2026-04-28 14:16:13.510000
Last modified
2026-10-26 21:10:00.170000
View original CVE JSON
{
"id": "CVE-2026-40551",
"sourceIdentifier": "[email protected]",
"published": "2026-04-28T14:16:13.510",
"lastModified": "2026-10-26T21:10:00.170",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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. \n\nThe 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."
},
{
"lang": "es",
"value": "Múltiples productos de BinSoft realizan autenticación del lado del cliente. Un atacante con acceso a cualquier instancia de la aplicación conectada al servidor backend puede eludir el proceso de verificación de inicio de sesión manipulando el binario de la aplicación y autenticarse como un usuario arbitrario. El problema descrito afecta a todas las versiones publicadas. El proveedor declaró que este problema es un resultado directo del modelo de arquitectura en el que se distribuye el software y que se mitigará con un manual de instalación corregido."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "BinSoft",
"product": "mpGabinet",
"defaultStatus": "affected",
"versions": [
{
"version": "0",
"lessThanOrEqual": "23.12.19",
"versionType": "semver",
"status": "affected"
}
]
},
{
"vendor": "BinSoft",
"product": "mpFirma",
"defaultStatus": "affected",
"versions": [
{
"version": "0",
"lessThanOrEqual": "26.4.9",
"versionType": "semver",
"status": "affected"
}
]
},
{
"vendor": "BinSoft",
"product": "mpFaktura",
"defaultStatus": "affected",
"versions": [
{
"version": "0",
"lessThanOrEqual": "26.4.9",
"versionType": "semver",
"status": "affected"
}
]
},
{
"vendor": "BinSoft",
"product": "mpFirma ERP",
"defaultStatus": "affected",
"versions": [
{
"version": "0",
"lessThanOrEqual": "26.4.9",
"versionType": "semver",
"status": "affected"
}
]
},
{
"vendor": "BinSoft",
"product": "mpSekretariat",
"defaultStatus": "affected",
"versions": [
{
"version": "0",
"lessThanOrEqual": "25.2.4",
"versionType": "semver",
"status": "affected"
}
]
},
{
"vendor": "BinSoft",
"product": "mpPOS",
"defaultStatus": "affected",
"versions": [
{
"version": "0",
"lessThanOrEqual": "25.2.4",
"versionType": "semver",
"status": "affected"
}
]
},
{
"vendor": "BinSoft",
"product": "mpCRM",
"defaultStatus": "affected",
"versions": [
{
"version": "0",
"lessThanOrEqual": "25.2.4",
"versionType": "semver",
"status": "affected"
}
]
},
{
"vendor": "BinSoft",
"product": "mpWarsztat",
"defaultStatus": "affected",
"versions": [
{
"version": "0",
"lessThanOrEqual": "20.4.28",
"versionType": "semver",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV40": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "4.0",
"vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"baseScore": 8.4,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
}
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-04-28T14:16:07.976794Z",
"id": "CVE-2026-40551",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-603"
}
]
}
],
"references": [
{
"url": "https://cert.pl/posts/2026/04/CVE-2026-40550/",
"source": "[email protected]"
},
{
"url": "https://www.binsoft.pl/produkty",
"source": "[email protected]"
}
]
}