No exploitation reported

CVE-2016-9154

Q: Is CVE-2016-9154 actively exploited?

Active exploitation of CVE-2016-9154 has not been confirmed. Its EPSS score was 1.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2016-9154?

CVE-2016-9154 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

No exploitation reported by the sources we read.

Published2016-12-23
WeaknessCWE-332

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2016-12-2305:59CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-9154?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-9154?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Siemens desigo web module pxa30-w0 firmwareversion to verify

Branch	Affected	Fixed in	Source
6.0	≤ 6.00.00	no fix published	NVD

Siemens desigo web module pxa30-w1 firmwareversion to verify

Branch	Affected	Fixed in	Source
6.0	≤ 6.00.00	no fix published	NVD

Siemens desigo web module pxa30-w2 firmwareversion to verify

Branch	Affected	Fixed in	Source
6.0	≤ 6.00.00	no fix published	NVD

3 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-16-355-01 CISA21 known affected
Siemens Desigo PX Web Module Insufficient Entropy Vulnerability
Siemens Desigo PX Web module PXA40-W0 firmware for Desigo PX automation controllers PXC00-E.D: <V6.00.046 · Siemens Desigo PX Web module PXA40-W0 firmware for Desigo PX automation controllers PXC50-E.D: <V6.00.046 · Siemens Desigo PX Web module PXA40-W0 firmware for Desigo PX automation controllers PXC100-E.D: <V6.00.046 · +18 more

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-16-355-01 · 21 productsSiemens provides firmware update V6.00.046 for the affected devices, which fixes the vulnerability. Siemens recommends that all users operating an affected device apply the update. The firmware updates for Desigo PX Web modules can be obtained from: (https://support.industry.siemens.com/cs/ww/en/vi…
Mitigation from the vendor CISA ICSA-16-355-01 · 21 productsUntil patches can be applied, Siemens recommends the following: Protect network access. Apply a defense-in-depth strategies. Restrict access to Port 443/TCP of Desigo PX-Web modules. Disable the web server.
Mitigation from the vendor CISA ICSA-16-355-01 · 21 productsFor more information on this vulnerability and more detailed mitigation instructions, please see Siemens Security Advisory SSA-856492 at the following location: (http://www.siemens.com/cert/advisories)

Advisories and patches

www.siemens.comMitigation · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.07.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
CNAweakness (CWE)CWE-332read 2026-10-23
NVDweakness (CWE)CWE-332read 2026-10-23
FIRST EPSSEPSS score1.5 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: 2016-12-23
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2016-9154?

Is CVE-2016-9154 actively exploited?

Active exploitation of CVE-2016-9154 has not been confirmed. Its EPSS score was 1.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-9154?

CVE-2016-9154 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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