CVE-2016-9154

moderate-risk
Published 2016-12-23

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.

Do I need to act?

~
1.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (6)

Desigo Web Module Pxa30-W0 Firmware
Desigo Web Module Pxa30-W2 Firmware
Desigo Web Module Pxa30-W1 Firmware
Desigo Web Module Pxa40-W0 Firmware
Desigo Web Module Pxa40-W1 Firmware
Desigo Web Module Pxa40-W2 Firmware

Affected Vendors

Siemens

References (6)

Third Party Advisory http://www.securityfocus.com/bid/94962
Mitigation http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-856492.pdf
Third Party Advisory https://ics-cert.us-cert.gov/advisories/ICSA-16-355-01
Third Party Advisory http://www.securityfocus.com/bid/94962
Mitigation http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-856492.pdf
Third Party Advisory https://ics-cert.us-cert.gov/advisories/ICSA-16-355-01
42
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 3/34 · Minimal
Exposure 13/34 · Low