Vulnerability in Siemens Simatic S7-1500 CPU Firmware
CVE-2014-2251
The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via unspecified vectors.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 8.3 (High). Vector: AV:N/AC:M/Au:N/C:P/I:P/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.027 (85.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Siemens Simatic S7-1500 CPU Firmware — versions 1.0.1, 1.1.0, 1.1.1
Public proof-of-concept exploits
References
- www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_s… (Patch, Vendor Advisory)
- ics-cert.us-cert.gov/advisories/ICSA-14-073-01 (US Government Resource)
- cert-portal.siemens.com/productcert/pdf/ssa-456423.pdf
Frequently asked questions
- What is CVE-2014-2251?
- CVE-2014-2251 is a vulnerability in Siemens Simatic S7-1500 CPU Firmware. Published 2014-03-16.
- Is CVE-2014-2251 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.