Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 allow remote attackers…
Priority MEDIUM 41Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 allow remote attackers to cause a denial of service (defect-mode transition) via crafted HTTP packets.
Why it matters now
EPSS 0.04456 91st 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 · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:simatic_s7-1500_cpu_firmware:*:*:*:*:*:*:*:* | up to 1.1.2 | Vulnerable | Siemens |
| cpe:2.3:o:siemens:simatic_s7-1500_cpu_firmware:1.0.1:*:*:*:*:*:*:* | 1.0.1 | Vulnerable | Siemens |
| cpe:2.3:o:siemens:simatic_s7-1500_cpu_firmware:1.1.0:*:*:*:*:*:*:* | 1.1.0 | Vulnerable | Siemens |
| cpe:2.3:o:siemens:simatic_s7-1500_cpu_firmware:1.1.1:*:*:*:*:*:*:* | 1.1.1 | Vulnerable | Siemens |
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_firmware:*:*:*:*:*:*:*:* Versions up to 1.1.2 Vulnerable ·Siemens
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_firmware:1.0.1:*:*:*:*:*:*:* Versions 1.0.1 Vulnerable ·Siemens
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_firmware:1.1.0:*:*:*:*:*:*:* Versions 1.1.0 Vulnerable ·Siemens
- cpe:2.3:o:siemens:simatic_s7-1500_cpu_firmware:1.1.1:*:*:*:*:*:*:* Versions 1.1.1 Vulnerable ·Siemens
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2014-2255
- 2026-10-03 Alias added: GHSA-x4gj-g8mq-9cxr
References
More Siemens Simatic S7-1500 Cpu Firmware vulnerabilities
- TI-2019-08156 Uncontrolled resource consumption in Siemens Development/Evaluation Kits for PROFINET IO… CVSS 3.1HIGH 7.5
- TI-2014-04151 Siemens SIMATIC S7-1500 CPU devices with firmware before 1.6 allow remote attackers to… CVSS 2.0HIGH 7.1
- TI-2016-02009 Siemens SIMATIC S7-1500 CPU devices before 1.8.3 allow remote attackers to cause a denial… CVSS 3.0HIGH 7.5
- TI-2022-09211 Uncontrolled resource consumption in Siemens SIMATIC CFU DIQ CVSS 3.1HIGH 7.5
- TI-2014-01791 Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 allow remote attackers… CVSS 2.0HIGH 7.8
- TI-2014-01783 The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware… CVSS 2.0HIGH 8.3
Sources
- CVE-2014-2255 · CVE Program
- CVE-2014-2255 · NVD
- FIRST EPSS
- GHSA-x4gj-g8mq-9cxr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences