Improper array index validation in Siemens SIMATIC MV400 family
Priority LOW 35CWE-1285Published · 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 · NVD. Fix status from CNA. Impact type from CWE-129 and the CVSS impact.
Summary
A vulnerability has been identified in SIMATIC MV400 family (All Versions < V7.0.6). The underlying TCP stack of the affected products does not correctly validate the sequence number for incoming TCP RST packages. An attacker could exploit this to terminate arbitrary TCP sessions.
Why it matters now
EPSS 0.01069 65th percentileScored 2026-11-07
Fix Fixed SIMATIC MV400 family (Siemens): V7.0.6
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 MV400 family | before V7.0.6 | V7.0.6 | Patch available | CNA |
- SIMATIC MV400 family VendorSiemens Affected before V7.0.6 Fixed in V7.0.6 Patch available CNA
CPE configurations NVD · 14
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:simatic_mv440_sr_firmware:*:*:*:*:*:*:*:* | before 7.0.6 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_mv440_sr:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_mv440_hr_firmware:*:*:*:*:*:*:*:* | before 7.0.6 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_mv440_hr:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_mv440_ur_firmware:*:*:*:*:*:*:*:* | before 7.0.6 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_mv440_ur:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_mv420_sr-b_firmware:*:*:*:*:*:*:*:* | before 7.0.6 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_mv420_sr-b:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_mv420_sr-p_firmware:*:*:*:*:*:*:*:* | before 7.0.6 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_mv420_sr-p:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:simatic_mv440_sr_firmware:*:*:*:*:*:*:*:* Versions before 7.0.6 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_mv440_sr:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_mv440_hr_firmware:*:*:*:*:*:*:*:* Versions before 7.0.6 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_mv440_hr:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_mv440_ur_firmware:*:*:*:*:*:*:*:* Versions before 7.0.6 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_mv440_ur:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_mv420_sr-b_firmware:*:*:*:*:*:*:*:* Versions before 7.0.6 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_mv420_sr-b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_mv420_sr-p_firmware:*:*:*:*:*:*:*:* Versions before 7.0.6 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_mv420_sr-p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Show 4 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:simatic_mv420_sr-b_body_firmware:*:*:*:*:*:*:*:* | before 7.0.6 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_mv420_sr-b_body:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_mv420_sr-p_body_firmware:*:*:*:*:*:*:*:* | before 7.0.6 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_mv420_sr-p_body:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:simatic_mv420_sr-b_body_firmware:*:*:*:*:*:*:*:* Versions before 7.0.6 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_mv420_sr-b_body:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_mv420_sr-p_body_firmware:*:*:*:*:*:*:*:* Versions before 7.0.6 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_mv420_sr-p_body:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
- Fix · CNA SIMATIC MV400 family (Siemens) Fixed in V7.0.6
Timeline
- 2026-10-02 Threatist record created from CVE-2020-25241
- 2026-10-03 Alias added: GHSA-hgp9-8qfr-qjj7
References
Sources
- CVE-2020-25241 · CVE Program
- CVE-2020-25241 · NVD
- FIRST EPSS
- GHSA-hgp9-8qfr-qjj7 · 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