A vulnerability has been identified in SIMATIC ET 200SP Open Controller (incl.
Priority LOW 36CWE-248Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-248.
Summary
A vulnerability has been identified in SIMATIC ET 200SP Open Controller (incl. SIPLUS variants) (V20.8), SIMATIC S7-1500 Software Controller (V20.8). The web server of the affected products contains a vulnerability that could allow a remote attacker to trigger a denial-of-service condition by sending a specially crafted HTTP request.
Why it matters now
EPSS 0.0161 76th 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 |
|---|---|---|---|---|---|
| Siemens | SIMATIC ET 200SP Open Controller (incl. SIPLUS variants) | V20.8 | — | No fix listed | CNA |
| Siemens | SIMATIC S7-1500 Software Controller | V20.8 | — | No fix listed | CNA |
- SIMATIC ET 200SP Open Controller (incl. SIPLUS variants) VendorSiemens Affected V20.8 Fixed in — No fix listed CNA
- SIMATIC S7-1500 Software Controller VendorSiemens Affected V20.8 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:simatic_et_200sp_open_controller_firmware:*:*:*:*:*:*:*:* | up to 20.8 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_et_200sp_open_controller:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_s7-1500_software_controller_firmware:*:*:*:*:*:*:*:* | up to 20.8 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_s7-1500_software_controller:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:simatic_et_200sp_open_controller_firmware:*:*:*:*:*:*:*:* Versions up to 20.8 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_et_200sp_open_controller:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_s7-1500_software_controller_firmware:*:*:*:*:*:*:*:* Versions up to 20.8 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_s7-1500_software_controller:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-15796
- 2026-10-03 Alias added: GHSA-mffw-j524-mrjp
References
More Siemens Simatic Et 200sp Open Controller Firmware vulnerabilities
- TI-2020-15025 Domain-bypass transient execution vulnerability in some Intel Atom(R) Processors may… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2020-15796 · CVE Program
- CVE-2020-15796 · NVD
- FIRST EPSS
- GHSA-mffw-j524-mrjp · 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