A vulnerability has been identified in SIMATIC S7-300 CPU family (incl
Published Mar 10, 2020
7.5
HIGHCVSS 3.1
EPSS 1.72%
Description
A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V3.X.17), SIMATIC TDC CP51M1 (All versions < V1.1.8), SIMATIC TDC CPU555 (All versions < V1.1.1), SINUMERIK 840D sl (All versions < V4.8.6), SINUMERIK 840D sl (All versions < V4.94). Specially crafted packets sent to port 102/tcp (Profinet) could cause the affected device to go into defect mode. A restart is required in order to recover the system. Successful exploitation requires an attacker to have network access to port 102/tcp, with no authentication. No user interation is required. At the time of advisory publication no public exploitation of this security vulnerability was known.
Affected products
- Vendor Siemens AG Product SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) Defaultn/a
- Version All versions < V3.X.17StatusaffectedConstraints-
- Version
-
- Version All versions < V1.1.8StatusaffectedConstraints-
- Version
-
- Version All versions < V1.1.1StatusaffectedConstraints-
- Version
-
- Version All versions < V4.8.6StatusaffectedConstraints-
- Version All versions < V4.94StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Siemens AG | SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) | n/a |
| |||||||||
| Siemens AG | Simatic Tdc Cp51m1 | n/a |
| |||||||||
| Siemens AG | Simatic Tdc Cpu555 | n/a |
| |||||||||
| Siemens AG | SINUMERIK 840D sl | n/a |
|
Configuration 1
- < 3.3.17
Running on/with
- n/a
Configuration 2
- < 3.3.17
Running on/with
- n/a
Configuration 3
- < 3.3.17
Running on/with
- n/a
Configuration 4
- < 3.3.17
Running on/with
- n/a
Configuration 5
- < 3.3.17
Running on/with
- n/a
Configuration 6
- < 3.3.17
Running on/with
- n/a
Configuration 7
- < 3.3.17
Running on/with
- n/a
Configuration 8
- < 3.3.17
Running on/with
- n/a
Configuration 9
- < 3.3.17
Running on/with
- n/a
Configuration 10
- < 4.8.6
Configuration 11
- < 4.94
Configuration 12
- < 1.1.8
Running on/with
- n/a
Configuration 13
- < 1.1.1
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Jun 2, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 1.72% (0.01716) | 76.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.67% (0.01674) | 73.74th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.10% (0.00103) | 42.78th | v3 (v2023.03.01) |
| Jul 3, 2024 | 0.10% (0.00103) | 42.67th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00103) | 40.66th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.50% (0.04499) | 74.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.84% (0.01840) | 47.83th | v5 (v2026.06.15) |
| Jan 6, 2022 | 1.84% (0.01840) | 47.32th | v1 |
| Sep 1, 2021 | 0.42% (0.00416) | 25.53th | v1 |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
References (1)
- https://cert-portal.siemens.com/productcert/pdf/ssa-508982.pdf x_refsource_MISCVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://cert-portal.siemens.com/productcert/pdf/ssa-508982.pdf | x_refsource_MISCVendor Advisory |
Change history (0)
No recorded changes yet.