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Fencer Intel
high 7.5

CVE-2016-9154 json

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.…

published 2016-12-23 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-9971

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-16-355-01 updated cvss 5.9

Siemens Desigo PX Web Module Insufficient Entropy Vulnerability

  • Siemens Desigo PX Web module PXA30-W0 firmware for Desigo PX automation controllers PXC00-U <V6.00.046 Siemens Desigo PX Web module PXA30-W0 firmware for Desigo PX automation controllers PXC64-U <V6.00.046 Siemens Desigo PX Web module PXA30-W0 firmware for Desigo PX automation controllers PXC128-U <V6.00.046 Siemens Desigo PX Web module PXA30-W1 firmware for Desigo PX automation controllers PXC00-U <V6.00.046 Siemens Desigo PX Web module PXA30-W1 firmware for Desigo PX automation controllers PXC64-U <V6.00.046 Siemens Desigo PX Web module PXA30-W1 firmware for Desigo PX automation controllers PXC128-U <V6.00.046
    +15 more products
    Siemens Desigo PX Web module PXA30-W2 firmware for Desigo PX automation controllers PXC00-U <V6.00.046 Siemens Desigo PX Web module PXA30-W2 firmware for Desigo PX automation controllers PXC64-U <V6.00.046 Siemens Desigo PX Web module PXA30-W2 firmware for Desigo PX automation controllers PXC128-U <V6.00.046 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 Siemens Desigo PX Web module PXA40-W0 firmware for Desigo PX automation controllers PXC200-E.D <V6.00.046 Siemens Desigo PX Web module PXA40-W1 firmware for Desigo PX automation controllers PXC00-E.D <V6.00.046 Siemens Desigo PX Web module PXA40-W1 firmware for Desigo PX automation controllers PXC50-E.D <V6.00.046 Siemens Desigo PX Web module PXA40-W1 firmware for Desigo PX automation controllers PXC100-E.D <V6.00.046 Siemens Desigo PX Web module PXA40-W1 firmware for Desigo PX automation controllers PXC200-E.D <V6.00.046 Siemens Desigo PX Web module PXA40-W2 firmware for Desigo PX automation controllers PXC00-E.D <V6.00.046 Siemens Desigo PX Web module PXA40-W2 firmware for Desigo PX automation controllers PXC50-E.D <V6.00.046 Siemens Desigo PX Web module PXA40-W2 firmware for Desigo PX automation controllers PXC100-E.D <V6.00.046 Siemens Desigo PX Web module PXA40-W2 firmware for Desigo PX automation controllers PXC200-E.D <V6.00.046
    affected: mitigation support.industry.siemens.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.50% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • n/a Desigo PX Web modules with all firmware versions < V6.00.046

Classification

Weakness
  • CWE-332 Insufficient Entropy in PRNG

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.