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Vulnerability record · CVE-2023-46156 · published 12 December 2023

CVE-2023-46156: Siemens simatic drive controller cpu 1504d tf firmware use after free vulnerability

Siemens · Simatic Drive Controller Cpu 1504d Tf Firmware

Affected devices improperly handle specially crafted packets sent to port 102/tcp. This could allow an attacker to create a denial of service condition. A restart is needed to restore normal operations.

7.5 CVSS 3.1 High EPSS 1.2% · top 31.9% CWE-416 · Use after free
7.5CVSS 3.1 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
73Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

Affected devices improperly handle specially crafted packets sent to port 102/tcp. This could allow an attacker to create a denial of service condition. A restart is needed to restore normal operations.

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

Affected products

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

References

LinkTags
https://cert-portal.siemens.com/productcert/html/ssa-280603.html
https://cert-portal.siemens.com/productcert/html/ssa-592380.html
https://cert-portal.siemens.com/productcert/pdf/ssa-280603.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-592380.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-280603.html
https://cert-portal.siemens.com/productcert/html/ssa-592380.html
https://cert-portal.siemens.com/productcert/pdf/ssa-280603.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-592380.pdf Vendor Advisory

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2023-46156), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.