CVE-2019-10943A vulnerability has been identified in SIMATIC Drive Controller family (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC…
- 7.5HighCVSS base score
- 0.95%Exploitation in 30 daysEPSS · top 38% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A vulnerability has been identified in SIMATIC Drive Controller family (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V20.8), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V20.8), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.4.0), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions >= V4.4.0), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V2.8.1), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.8.1), SIMATIC S7-1500 Software Controller (All versions < V20.8), SIMATIC S7-1500 Software Controller (All versions >= V20.8), SIMATIC S7-PLCSIM Advanced (All versions < V3.0), SIMATIC S7-PLCSIM Advanced (All versions >= V3.0). An attacker with network access to port 102/tcp could potentially modify the user program on the PLC in a way that the running code is different from the source code which is stored on the device. An attacker must have network access to affected devices and must be able to perform changes to the user program. The vulnerability could impact the perceived integrity of the user program stored on the CPU. An engineer that tries to obtain the code of the user program running on the device, can receive different source code that is not actually running on the device.
Timeline
ID reserved
By siemens
- 4 months later
· 4 months later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.95% · top 38% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
Siemens · SIMATIC Drive Controller family
- affected All versions
Siemens · SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants)
- affected All versions
Siemens · SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)
- affected All versions < V20.8
Siemens · SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)
- affected All versions >= V20.8
Siemens · SIMATIC S7-1200 CPU family (incl. SIPLUS variants)
- affected All versions < V4.4.0
Siemens · SIMATIC S7-1200 CPU family (incl. SIPLUS variants)
- affected All versions >= V4.4.0
Siemens · SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)
- affected All versions < V2.8.1
Siemens · SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)
- affected All versions >= V2.8.1
Siemens · SIMATIC S7-1500 Software Controller
- affected All versions < V20.8
Siemens · SIMATIC S7-1500 Software Controller
- affected All versions >= V20.8
Siemens · SIMATIC S7-PLCSIM Advanced
- affected All versions < V3.0
Siemens · SIMATIC S7-PLCSIM Advanced
- affected All versions >= V3.0
References
References1
- https://cert-portal.siemens.com/productcert/pdf/ssa-232418.pdf (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2019-2657 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2019-10943)Record last updated .