Memory corruption in Siemens SIMATIC S7-400 CPU 412-1 DP V7
Priority MEDIUM 41CWE-119Published · 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
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
A vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414-2 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416-2 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-2 DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.10), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (All versions < V10.1), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions < V8.2.3), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Affected devices improperly handle specially crafted packets sent to port 102/tcp. This could allow an attacker to create a Denial-of-Service condition. A restart is needed to restore normal operations.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01004 63rd percentileScored 2026-11-07
Fix Fixed SIMATIC S7-400 CPU 412-2 PN/DP V7 (Siemens): V7.0.3SIMATIC S7-400 CPU 414-3 PN/DP V7 (Siemens): V7.0.3+8 more products
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 S7-400 CPU 412-1 DP V7 | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-400 CPU 412-2 DP V7 | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-400 CPU 412-2 PN/DP V7 | before V7.0.3 | V7.0.3 | Patch available | CNA |
| Siemens | SIMATIC S7-400 CPU 414-2 DP V7 | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-400 CPU 414-3 DP V7 | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-400 CPU 414-3 PN/DP V7 | before V7.0.3 | V7.0.3 | Patch available | CNA |
| Siemens | SIMATIC S7-400 CPU 414F-3 PN/DP V7 | before V7.0.3 | V7.0.3 | Patch available | CNA |
| Siemens | SIMATIC S7-400 CPU 416-2 DP V7 | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-400 CPU 416-3 DP V7 | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-400 CPU 416-3 PN/DP V7 | before V7.0.3 | V7.0.3 | Patch available | CNA |
| Siemens | SIMATIC S7-400 CPU 416F-2 DP V7 | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-400 CPU 416F-3 PN/DP V7 | before V7.0.3 | V7.0.3 | Patch available | CNA |
| Siemens | SIMATIC S7-400 CPU 417-4 DP V7 | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) | before V6.0.10 | V6.0.10 | Patch available | CNA |
| Siemens | SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) | before V10.1 | V10.1 | Patch available | CNA |
| Siemens | SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) | before V8.2.3 | V8.2.3 | Patch available | CNA |
| Siemens | SIPLUS S7-400 CPU 414-3 PN/DP V7 | before V7.0.3 | V7.0.3 | Patch available | CNA |
| Siemens | SIPLUS S7-400 CPU 416-3 PN/DP V7 | before V7.0.3 | V7.0.3 | Patch available | CNA |
| Siemens | SIPLUS S7-400 CPU 416-3 V7 | All versions | — | No fix listed | CNA |
| Siemens | SIPLUS S7-400 CPU 417-4 V7 | All versions | — | No fix listed | CNA |
- SIMATIC S7-400 CPU 412-1 DP V7 VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-400 CPU 412-2 DP V7 VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-400 CPU 412-2 PN/DP V7 VendorSiemens Affected before V7.0.3 Fixed in V7.0.3 Patch available CNA
- SIMATIC S7-400 CPU 414-2 DP V7 VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-400 CPU 414-3 DP V7 VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-400 CPU 414-3 PN/DP V7 VendorSiemens Affected before V7.0.3 Fixed in V7.0.3 Patch available CNA
- SIMATIC S7-400 CPU 414F-3 PN/DP V7 VendorSiemens Affected before V7.0.3 Fixed in V7.0.3 Patch available CNA
- SIMATIC S7-400 CPU 416-2 DP V7 VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-400 CPU 416-3 DP V7 VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-400 CPU 416-3 PN/DP V7 VendorSiemens Affected before V7.0.3 Fixed in V7.0.3 Patch available CNA
- SIMATIC S7-400 CPU 416F-2 DP V7 VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-400 CPU 416F-3 PN/DP V7 VendorSiemens Affected before V7.0.3 Fixed in V7.0.3 Patch available CNA
- SIMATIC S7-400 CPU 417-4 DP V7 VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) VendorSiemens Affected before V6.0.10 Fixed in V6.0.10 Patch available CNA
- SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) VendorSiemens Affected before V10.1 Fixed in V10.1 Patch available CNA
- SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) VendorSiemens Affected before V8.2.3 Fixed in V8.2.3 Patch available CNA
- SIPLUS S7-400 CPU 414-3 PN/DP V7 VendorSiemens Affected before V7.0.3 Fixed in V7.0.3 Patch available CNA
- SIPLUS S7-400 CPU 416-3 PN/DP V7 VendorSiemens Affected before V7.0.3 Fixed in V7.0.3 Patch available CNA
- SIPLUS S7-400 CPU 416-3 V7 VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIPLUS S7-400 CPU 417-4 V7 VendorSiemens Affected All versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:simatic_s7-400h_v6_firmware:*:*:*:*:*:*:*:* | before 6.0.10 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400h_v6:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_s7-400_pn\/dp_v7_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_s7-400_pn\/dp_v7:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_s7-410_v8_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_s7-410_v8:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_s7-410_v10_firmware:*:*:*:*:*:*:*:* | before 10.1 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_s7-410_v10:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:simatic_s7-400h_v6_firmware:*:*:*:*:*:*:*:* Versions before 6.0.10 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400h_v6:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_s7-400_pn\/dp_v7_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_s7-400_pn\/dp_v7:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_s7-410_v8_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_s7-410_v8:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_s7-410_v10_firmware:*:*:*:*:*:*:*:* Versions before 10.1 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_s7-410_v10:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
- Fix · CNA SIMATIC S7-400 CPU 412-2 PN/DP V7 (Siemens) Fixed in V7.0.3
- Fix · CNA SIMATIC S7-400 CPU 414-3 PN/DP V7 (Siemens) Fixed in V7.0.3
- Fix · CNA SIMATIC S7-400 CPU 414F-3 PN/DP V7 (Siemens) Fixed in V7.0.3
- Fix · CNA SIMATIC S7-400 CPU 416-3 PN/DP V7 (Siemens) Fixed in V7.0.3
- Fix · CNA SIMATIC S7-400 CPU 416F-3 PN/DP V7 (Siemens) Fixed in V7.0.3
- Fix · CNA SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (Siemens) Fixed in V6.0.10
- Fix · CNA SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (Siemens) Fixed in V10.1
- Fix · CNA SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (Siemens) Fixed in V8.2.3
- Fix · CNA SIPLUS S7-400 CPU 414-3 PN/DP V7 (Siemens) Fixed in V7.0.3
- Fix · CNA SIPLUS S7-400 CPU 416-3 PN/DP V7 (Siemens) Fixed in V7.0.3
Timeline
- 2026-10-02 Threatist record created from CVE-2021-40368
- 2026-10-03 Alias added: GHSA-q4w8-vrmx-g9m6
References
More Siemens Simatic S7-400 Pn/dp V7 Firmware vulnerabilities
- TI-2022-09211 Uncontrolled resource consumption in Siemens SIMATIC CFU DIQ CVSS 3.1HIGH 7.5
- TI-2018-11877 Improper signature verification in Siemens SIMATIC S7-400 CPU 412-1 DP V7 CVSS 3.1HIGH 8.2
- TI-2018-11876 Improper input validation in Siemens SIMATIC S7-400 CPU 412-1 DP V7 CVSS 3.1HIGH 7.5
- TI-2018-03420 Improper input validation in Siemens SIMATIC S7-400 CPU 414-3 PN/DP V7 CVSS 3.1MEDIUM 6.5
- TI-2022-12830 Cross-site request forgery in Siemens SIMATIC Drive Controller CPU 1504D TF CVSS 3.1MEDIUM 6.5
Sources
- CVE-2021-40368 · CVE Program
- CVE-2021-40368 · NVD
- FIRST EPSS
- GHSA-q4w8-vrmx-g9m6 · 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