Cleartext transmission of sensitive information in Siemens SIMATIC MV400 family
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-319.
Summary
A vulnerability has been identified in SIMATIC MV400 family (All Versions < V7.0.6). Communication with the device is not encrypted. Data transmitted between the device and the user can be obtained by an attacker in a privileged network position. The security vulnerability can be exploited by an attacker in a privileged network position which allows eavesdropping the communication between the affected device and the user. The user must invoke a session. Successful exploitation of the vulnerability compromises confidentiality of the data transmitted.
Why it matters now
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 · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:simatic_mv420_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_mv420:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_mv440_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_mv440:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:simatic_mv420_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_mv420:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_mv440_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_mv440:-:*:*:*:*:*:*:* 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-2019-10926
- 2026-10-03 Alias added: GHSA-c4c4-86rp-wv48
References
More Siemens Simatic Mv420 Firmware vulnerabilities
- TI-2019-10399 Uncontrolled resource consumption in Siemens Development/Evaluation Kits for PROFINET IO… CVSS 3.1HIGH 7.5
- TI-2020-16749 In SIMATIC MV400 family versions prior to v7.0.6, the ISN generator is initialized with a… CVSS 3.1HIGH 7.5
- TI-2019-08146 Improper access control in Siemens SIMATIC MV400 family CVSS 3.1HIGH 7.1
Sources
- CVE-2019-10926 · CVE Program
- CVE-2019-10926 · NVD
- FIRST EPSS
- GHSA-c4c4-86rp-wv48 · GitHub Advisory Database · CC BY 4.0
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