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CVE-2016-9154

19
FAUCET Score

CVE-2016-9154 describes an insufficient entropy vulnerability in the pseudo-random number generator used by Siemens Desigo PX Web modules (PXA40-W0/W1/W2 and PXA30-W0/W1/W2) across various Desigo PX automation controllers with firmware versions prior to V6.00.046. This flaw allows remote attackers to potentially reconstruct the private keys associated with HTTPS certificates. Rated 7.5 HIGH on CVSSv3, this vulnerability is network-exploitable with low attack complexity, posing a significant risk of confidentiality compromise. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.00.00CPE matchmatch criteria
cpe:2.3:a:siemens:desigo_web_module_pxa30-w0_firmware:*:*:*:*:*:*:*:*
<= 6.00.00CPE matchmatch criteria
cpe:2.3:a:siemens:desigo_web_module_pxa30-w1_firmware:*:*:*:*:*:*:*:*
<= 6.00.00CPE matchmatch criteria
cpe:2.3:a:siemens:desigo_web_module_pxa30-w2_firmware:*:*:*:*:*:*:*:*
<= 6.00.00CPE matchmatch criteria
cpe:2.3:a:siemens:desigo_web_module_pxa40-w0_firmware:*:*:*:*:*:*:*:*
<= 6.00.00CPE matchmatch criteria
cpe:2.3:a:siemens:desigo_web_module_pxa40-w1_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.50%
Probability of exploitation in next 30 days
EPSS Percentile
71.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0150 is in the 53rd percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

ics-cert.us-cert.gov / advisories/ICSA-16-355-01
Third Party AdvisoryUS Government Resource
securityfocus.com / bid/94962
Third Party AdvisoryVDB Entry
siemens.com / cert/pool/cert/siemens_security_advisory_ssa-856492.pdf
MitigationVendor Advisory