Improper input validation in Siemens SIMATIC S7-300 CPU family
Priority MEDIUM 44CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
A vulnerability has been identified in SIMATIC S7-300 CPU family (All versions), SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 V6 and earlier CPU family (All versions), SIMATIC S7-400 V7 CPU family (All versions). Specially crafted packets sent to port 80/tcp could cause the affected devices to go into defect mode. A cold restart is required to recover the system.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03086 87th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Siemens | SIMATIC S7-300 CPU family | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-400 V6 and earlier CPU family | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-400 V7 CPU family | All versions | — | No fix listed | CNA |
- SIMATIC S7-300 CPU family VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-400 V6 and earlier CPU family VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-400 V7 CPU family VendorSiemens Affected All versions Fixed in — No fix listed CNA
CPE configurations NVD · 21
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:simatic_s7-300_cpu_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_s7-300_cpu_312:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-300_cpu_314:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-300_cpu_315-2_dp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-300_cpu_315-2_pn\/dp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-300_cpu_317-_2_dp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-300_cpu_317-2_pn\/dp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-300_cpu_319-3_pn\/dp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_s7-400_cpu_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400_cpu_412-1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:simatic_s7-300_cpu_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_s7-300_cpu_312:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-300_cpu_314:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-300_cpu_315-2_dp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-300_cpu_315-2_pn\/dp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-300_cpu_317-_2_dp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-300_cpu_317-2_pn\/dp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-300_cpu_319-3_pn\/dp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_s7-400_cpu_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400_cpu_412-1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Show 11 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:siemens:simatic_s7-400_cpu_412-2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400_cpu_412-2_pn:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400_cpu_414-2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400_cpu_414-3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400_cpu_414-3_pn\/dp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400_cpu_416-2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400_cpu_416-3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400_cpu_416-3_pn\/dp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400_cpu_416f-2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400_cpu_416f-3_pn\/dp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400_cpu_417-4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:h:siemens:simatic_s7-400_cpu_412-2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400_cpu_412-2_pn:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400_cpu_414-2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400_cpu_414-3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400_cpu_414-3_pn\/dp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400_cpu_416-2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400_cpu_416-3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400_cpu_416-3_pn\/dp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400_cpu_416f-2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400_cpu_416f-3_pn\/dp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400_cpu_417-4:-:*:*:*:*:*:*:* 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-2016-9158
- 2026-10-03 Alias added: GHSA-pmf4-x4c5-385f
References
More Siemens Simatic S7-300 Cpu Firmware vulnerabilities
- TI-2015-01942 Siemens SIMATIC S7-300 CPU devices allow remote attackers to cause a denial of service… CVSS 3.1HIGH 7.5
- TI-2019-08156 Uncontrolled resource consumption in Siemens Development/Evaluation Kits for PROFINET IO… CVSS 3.1HIGH 7.5
- TI-2019-13344 Uncontrolled resource consumption in Siemens SIMATIC S7-300 CPU family CVSS 3.1HIGH 7.5
- TI-2022-09211 Uncontrolled resource consumption in Siemens SIMATIC CFU DIQ CVSS 3.1HIGH 7.5
- TI-2019-13920 Uncontrolled resource consumption in Siemens Development/Evaluation Kits for PROFINET IO… CVSS 3.1HIGH 7.5
- TI-2019-08144 Uncontrolled resource consumption in Siemens Development/Evaluation Kits for PROFINET IO… CVSS 3.1HIGH 7.5
Sources
- CVE-2016-9158 · CVE Program
- CVE-2016-9158 · NVD
- FIRST EPSS
- GHSA-pmf4-x4c5-385f · GitHub Advisory Database · CC BY 4.0
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