How severe is CVE-2016-9154?

CVE-2016-9154 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2016-9154 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-9154?

CVE-2016-9154 primarily affects Siemens Desigo Web Module Pxa30-w0 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-9154?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-9154 published?

CVE-2016-9154 was published on 2016-12-23 and last updated on 2026-06-17.

CVE-2016-9154

CVE-2016-9154 is a high-severity vulnerability in Siemens Desigo Web Module Pxa30-w0 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-332.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-332
Affected product: Siemens Desigo Web Module Pxa30-w0 Firmware
Published: 2016-12-23
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2016-9154?: 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.
How severe is CVE-2016-9154?: CVE-2016-9154 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2016-9154 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-9154?: CVE-2016-9154 primarily affects Siemens Desigo Web Module Pxa30-w0 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-9154?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-9154 published?: CVE-2016-9154 was published on 2016-12-23 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:siemens:desigo_web_module_pxa30-w0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:desigo_web_module_pxa30-w1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:desigo_web_module_pxa30-w2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:desigo_web_module_pxa40-w0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:desigo_web_module_pxa40-w1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:desigo_web_module_pxa40-w2_firmware:*:*:*:*:*:*:*:*

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