The random-number generator on Siemens SIMATIC S7-1200 CPU PLC devices with firmware…
Priority MEDIUM 42CWE-310Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The random-number generator on Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via unspecified vectors, a different vulnerability than CVE-2014-2251.
Why it matters now
EPSS 0.03144 87th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:simatic_s7_cpu_1200_firmware:*:*:*:*:*:*:*:* | up to 3.0.2 | Vulnerable | Siemens |
| cpe:2.3:o:siemens:simatic_s7_cpu_1200_firmware:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_s7_cpu-1211c:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_s7_cpu_1212c:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_s7_cpu_1214c:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_s7_cpu_1215c:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_s7_cpu_1217c:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
- cpe:2.3:o:siemens:simatic_s7_cpu_1200_firmware:*:*:*:*:*:*:*:* Versions up to 3.0.2 Vulnerable ·Siemens
- cpe:2.3:o:siemens:simatic_s7_cpu_1200_firmware:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_s7_cpu-1211c:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_s7_cpu_1212c:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_s7_cpu_1214c:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_s7_cpu_1215c:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_s7_cpu_1217c:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2014-2250
- 2026-10-03 Alias added: GHSA-5qj6-vw7x-6j4g
References
More Siemens Simatic S7 Cpu-1211c vulnerabilities
- TI-2014-01790 Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers… CVSS 2.0HIGH 7.8
- TI-2014-01786 Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers… CVSS 2.0HIGH 7.8
- TI-2014-01788 Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers… CVSS 2.0HIGH 7.8
- TI-2014-02338 Cross-site scripting (XSS) vulnerability in the integrated web server on Siemens SIMATIC… CVSS 2.0MEDIUM 4.3
- TI-2014-02339 CRLF injection vulnerability in the integrated web server on Siemens SIMATIC S7-1200 CPU… CVSS 2.0MEDIUM 5.8
- TI-2014-01784 Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers… CVSS 2.0MEDIUM 6.1
Sources
- CVE-2014-2250 · CVE Program
- CVE-2014-2250 · NVD
- FIRST EPSS
- GHSA-5qj6-vw7x-6j4g · GitHub Advisory Database · CC BY 4.0
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