CVE-2025-40758 | BDVDB-2026-289733 Detail

SiemensMendix SAML (Mendix 10.12 compatible)

Description#

A vulnerability has been identified in Mendix SAML (Mendix 10.12 compatible) (All versions < V4.0.3), Mendix SAML (Mendix 10.21 compatible) (All versions < V4.1.2), Mendix SAML (Mendix 9.24 compatible) (All versions < V3.6.21). Affected versions of the module insufficiently enforce signature validation and binding checks. This could allow unauthenticated remote attackers to hijack an account in specific SSO configurations.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-347 Improper Verification of Cryptographic Signature

References#

https://cert-portal.siemens.com/productcert/html/ssa-395458.html

Exploit#

No public exploit known

History#

Version 12025-08-14Record published in the CVE List.

Published

Published: 2025-08-14
Last modified: 2025-08-14

Vendor information

Vendor: Siemens
Product: Mendix SAML (Mendix 10.12 compatible)

All Siemens vulnerabilities

Score

8.7 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 17.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< V4.0.3
Fixed
V4.0.3

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.7 High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Changed
Confidentiality	High
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).