CVE-2023-29131

HIGHNVD 7.47.4—

7.4

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.

CVSS v3: 7.4
EG Score: 7.4(medium)
EPSS: 7.3%
KEV: Not listed

Published

July 11, 2023

Last Modified

February 18, 2026

References (2)

productcert@siemenshttps://cert-portal.siemens.com/productcert/pdf/ssa-313488.pdf
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-313488.pdf

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-276Incorrect Default Permissions

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:11 UTCepss_batch
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2026-05-26 07:18 UTCepss_batch

Frequently asked(5)

What is CVE-2023-29131?

CVE-2023-29131 is a high vulnerability published on July 11, 2023. 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.

When was CVE-2023-29131 disclosed?

CVE-2023-29131 was first published in the National Vulnerability Database on July 11, 2023, with the most recent update on February 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-29131 actively exploited?

CVE-2023-29131 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

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

CVE-2023-29131 has a CVSS v3 base score of 7.4 (NVD).

How do I remediate CVE-2023-29131?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-29131, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-29131

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-29131?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)