CVE-2016-9154

What it is

Siemens Desigo PX Web modules PXA40-W0, PXA40-W1, PXA40-W2 for Desigo PX automation controllers PXC00-E.D, PXC50-E.D, PXC100-E.D, PXC200-E.D (All firmware versions < V6.00.046) and Desigo PX Web modules PXA30-W0, PXA30-W1, PXA30-W2 for Desigo PX automation controllers PXC00-U, PXC64-U, PXC128-U (All firmware versions < V6.00.046) use a pseudo random number generator with insufficient entropy to generate certificates for HTTPS, potentially allowing remote attackers to reconstruct the corresponding private key.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Exploit odds

1.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2016-12-23 05:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 00:55 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.5% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2016-12-23 05:59 UTC

Last modified

2026-06-17 00:55 UTC

Exploit probability

1.5% · EPSS, next 30 days

Weakness

CWE-332

Record status

Modified

Affected

• Siemens Desigo Web Module pxa30-w0 Firmware ≤ 6.00.00
• Siemens Desigo Web Module pxa30-w1 Firmware ≤ 6.00.00
• Siemens Desigo Web Module pxa30-w2 Firmware ≤ 6.00.00
• Siemens Desigo Web Module pxa40-w0 Firmware ≤ 6.00.00
• Siemens Desigo Web Module pxa40-w1 Firmware ≤ 6.00.00
• Siemens Desigo Web Module pxa40-w2 Firmware ≤ 6.00.00

Attack profile CVSS 3.0 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

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