CVE-2014-2251: n/a vulnerability

CVE-2014-2251: The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 does not...

The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via unspecified vectors.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 10:06 UTC (UTC+00:00)

Security readout for executives and security teams

Some Siemens SIMATIC S7-1500 PLC CPUs used weak random-number generation before firmware 1.5.0. That weakness could make security protections easier to bypass and may allow remote session hijacking. The source bundle does not show active exploitation or a CVSS score. Exposure is likely limited to environments running Siemens SIMATIC S7-1500 CPU PLC devices with firmware older than 1.5.0, especially where remote access to PLC management or control interfaces is possible. Prioritize remediation for remotely reachable or operationally critical PLCs. This is not listed as KEV in the source bundle, but session hijacking on industrial control equipment can create meaningful operational risk. Mitigation focus: Review Siemens SSA-456423 for affected model and firmware details.; Update affected S7-1500 CPU firmware to 1.5.0 or later where applicable.; Restrict remote access to PLC interfaces to trusted management networks..

Prepared: Jun 14, 2026, 14:32 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 16, 2014, 10:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://cert-portal.siemens.com/productcert/pdf/ssa-456423.pdfCVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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