How severe is CVE-2023-40726?

CVE-2023-40726 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-40726 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40726?

CVE-2023-40726 affects Siemens Qms Automotive. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40726?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-40726 published?

CVE-2023-40726 was published on 2023-09-12 and last updated on 2026-06-17.

CVE-2023-40726

CVE-2023-40726 is a high-severity vulnerability in Siemens Qms Automotive with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-550.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-550
Affected product: Siemens Qms Automotive
Published: 2023-09-12
Last modified: 2026-06-17

Description

A vulnerability has been identified in QMS Automotive (All versions < V12.39). The affected application server responds with sensitive information about the server. This could allow an attacker to directly access the database.

Frequently asked questions

What is CVE-2023-40726?: A vulnerability has been identified in QMS Automotive (All versions < V12.39). The affected application server responds with sensitive information about the server. This could allow an attacker to directly access the database.
How severe is CVE-2023-40726?: CVE-2023-40726 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-40726 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40726?: CVE-2023-40726 affects Siemens Qms Automotive. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40726?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-40726 published?: CVE-2023-40726 was published on 2023-09-12 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:siemens:qms_automotive:*:*:*:*:*:*:*:*

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