Is CVE-2023-29131 actively exploited?

No active exploitation of CVE-2023-29131 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-29131 be exploited remotely?

Yes. CVE-2023-29131 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-29131?

CVE-2023-29131 has a CVSS score of 10.0 (CRITICAL).

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CRITICAL

CVE-2023-29131

CWE-276Published: July 11, 2023· Updated: Jun 17, 2026

10.0

CVSS v3.1

Official Description

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.5). Affected device consists of an incorrect default value in the SSH configuration. This could allow an attacker to bypass network isolation.

NVD Source

Technical Analysis

CVE-2023-29131 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 10.0.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.