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Fencer Vulns
low 2.2

CVE-2025-40571 json

A vulnerability has been identified in Mendix OIDC SSO (Mendix 10.12 compatible) (All versions < V4.0.1), Mendix OIDC SSO (Mendix 9 compati…

published 2025-05-13 17 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-14675

cvss
2.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits
0
none known

Summary

A vulnerability has been identified in Mendix OIDC SSO (Mendix 10.12 compatible) (All versions < V4.0.1), Mendix OIDC SSO (Mendix 9 compatible) (All versions < V3.3.1), Mendix OIDC SSO V4.2 (Mendix 10 compatible) (All versions < V4.2.1), Mendix OIDC SSO V4.3 (Mendix 10 compatible) (All versions). The Mendix OIDC SSO module grants read and write access to all tokens exclusively to the Administrator role and could result in privilege misuse by an adversary modifying the module during Mendix development.

Patch / fix

  • Siemens Mendix OIDC SSO (Mendix 10.12 compatible) V4.0.1
  • Siemens Mendix OIDC SSO (Mendix 9 compatible) V3.3.1
  • Siemens Mendix OIDC SSO V4.2 (Mendix 10 compatible) V4.2.1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-135-15 updated cvss 2.2

Siemens Mendix OIDC SSO

  • Siemens Mendix OIDC SSO (Mendix 9 compatible) < 3.3.1
    affected: fixed in V3.3.1, mitigation marketplace.mendix.com
  • Siemens Mendix OIDC SSO (Mendix 10.12 compatible) < 4.0.1
    affected: fixed in V4.0.1, mitigation marketplace.mendix.com
  • Siemens Mendix OIDC SSO V4.2 (Mendix 10 compatible) < 4.2.1
    affected: fixed in V4.2.1, mitigation
  • Siemens Mendix OIDC SSO V4.3 (Mendix 10 compatible)
    affected: mitigation, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
17 mo ago

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.2 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N
CNA 4.0 2.1 CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CNA 4.0 2.1 CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/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

Affected products

  • Siemens Mendix OIDC SSO (Mendix 10.12 compatible)
  • Siemens Mendix OIDC SSO (Mendix 9 compatible)
  • Siemens Mendix OIDC SSO V4.2 (Mendix 10 compatible)
  • Siemens Mendix OIDC SSO V4.3 (Mendix 10 compatible)

Classification

Weakness
  • CWE-266 Incorrect Privilege Assignment

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.