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CVE-2023-45794VulnerabilityPublished Updated

CVE-2023-45794: Siemens Mendix Applications using Mendix 10 · Authentication Bypass by Capture-replay

Affects Siemens Mendix Applications using Mendix 10Source CVE Database V5

0

Not known to be exploited · CVSS 6.8 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
6.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 37% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N/E:P/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Nov 2023

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

AI-suggested

European organizations should immediately prioritize upgrading Mendix applications to version 10.4.0 or later, or the corresponding patched versions for Mendix 7, 8, and 9. In parallel, conduct a thorough review of application access control models to ensure least privilege principles are strictly enforced and that sensitive operations require multi-factor authentication or additional verification. Implement network segmentation and monitoring to detect unusual replay or authentication anomalies, focusing on internal traffic where authenticated sessions are used. Employ session management best practices such as binding sessions to client attributes (IP, device fingerprint) and implementing short session lifetimes to reduce replay window. Use application-layer logging and anomaly detection to identify suspicious access patterns indicative of replay attacks. Educate internal users about credential security to reduce risk of initial credential compromise. Finally, coordinate with Siemens and Mendix support for guidance on secure configuration and any additional patches or workarounds.

Description

CVE-2023-45794 is an authentication bypass vulnerability affecting Siemens Mendix Applications using Mendix versions prior to 10.4.0, as well as earlier Mendix 7, 8, and 9 versions below specified patch levels. The flaw arises from a capture-replay weakness in the platform's authentication mechanism, potentially allowing authenticated attackers to replay captured authentication tokens or requests. Exploitation can lead to unauthorized access or modification of application objects and privilege escalation within the affected app context. The vulnerability requires an attacker with some level of authenticated access, and exploitation does not require user interaction. The CVSS score is 6.8 (medium severity), reflecting network attack vector, low complexity, and partial privileges required. No known exploits are currently reported in the wild. European organizations using Mendix-based applications, especially in critical infrastructure or industrial sectors, should prioritize patching and reviewing access control models to mitigate risk.

References

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