CVE-2023-46156

Affected devices improperly handle specially crafted packets sent to port 102/tcp. This could...

7.5 High

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

1.24%Up 1.2 points since Dec 13, 2023

What each source reports

CVE List Score used 7.5

Record: CVE-2023-46156
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
Weakness: CWE-416
Updated: 2026-11-02

EUVDEUVD-2023-50399 7.5

Record: EUVD-2023-50399
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
Updated: 2026-11-02

GitHub AdvisoriesGHSA-5fwp-f47r-rg74 7.5

Affected devices improperly handle specially crafted packets sent to port 102/tcp. This could...

Record: GHSA-5fwp-f47r-rg74
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-416
Updated: 2026-11-02

NVD 7.5

Record: CVE-2023-46156
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-416
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-46156 is a high vulnerability (CVSS 7.5) in Siemens Simatic Drive Controller Cpu 1504d Tf, published December 12, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.24%, the 69th percentile. No source names a fixed version.