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Vulnerability record · CVE-2023-40727 · published 12 September 2023

CVE-2023-40727: Siemens qms automotive improper verification of cryptographic signature vulnerability

Siemens · Qms Automotive

A vulnerability has been identified in QMS Automotive (All versions < V12.39). The QMS.Mobile module of the affected application uses weak outdated application signing mechanism. This could allow an attacker to tamper the application code.

7.8 CVSS 3.1 High EPSS 0.13% · top 97.7% CWE-347 · Improper verification of cryptographic signature
7.8CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability has been identified in QMS Automotive (All versions < V12.39). The QMS.Mobile module of the affected application uses weak outdated application signing mechanism. This could allow an attacker to tamper the application code.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-147266.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-147266.pdf Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-27389Siemens opcenter quality vulnerabilityA vulnerability has been identified in Opcenter Quality (All versions < V12.2), QMS Automotive (All versions < V12.30). A private sign key is shipped…EPSS 1.0%8.8CVE-2023-40726Siemens qms automotive vulnerabilityA vulnerability has been identified in QMS Automotive (All versions < V12.39). The affected application server responds with sensitive information ab…EPSS 0.69%8.8CVE-2023-40730Siemens qms automotive improper access control vulnerabilityA vulnerability has been identified in QMS Automotive (All versions < V12.39). The QMS.Mobile module of the affected application lacks sufficient aut…EPSS 0.57%8.8CVE-2023-40731Siemens qms automotive unrestricted file upload vulnerabilityA vulnerability has been identified in QMS Automotive (All versions < V12.39). The affected application allows users to upload arbitrary file types. …EPSS 0.55%7.8CVE-2023-40728Siemens qms automotive vulnerabilityA vulnerability has been identified in QMS Automotive (All versions < V12.39). The QMS.Mobile module of the affected application stores sensitive app…EPSS 0.20%7.6CVE-2022-43958Siemens qms automotive cleartext storage of sensitive data vulnerabilityA vulnerability has been identified in QMS Automotive (All versions < V12.39), QMS Automotive (All versions < V12.39). User credentials are stored in…EPSS 0.34%7.4CVE-2023-40729Siemens qms automotive cleartext transmission vulnerabilityA vulnerability has been identified in QMS Automotive (All versions < V12.39). The affected application lacks security control to prevent unencrypted…EPSS 0.29%7.3CVE-2023-40724Siemens qms automotive vulnerabilityA vulnerability has been identified in QMS Automotive (All versions < V12.39). User credentials are found in memory as plaintext. An attacker could p…EPSS 0.13%

Source: NIST National Vulnerability Database (record CVE-2023-40727), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.