Improper input validation in SINAMICS Medium Voltage Products, Remote Access
Priority MEDIUM 45CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
SINAMICS medium voltage routable products are affected by a vulnerability in the Sm@rtServer component for remote access that could allow an unauthenticated attacker to cause a denial-of-service condition, and/or execution of limited configuration modifications and/or execution of limited control commands on the SINAMICS Medium Voltage Products, Remote Access (SINAMICS SL150: All versions, SINAMICS SM150: All versions, SINAMICS SM150i: All versions).
Why it matters now
EPSS 0.01545 75th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| — | SINAMICS Medium Voltage Products, Remote Access | SINAMICS SL150: All versions, SINAMICS SM150: All versions, SINAMICS SM150i: All versions | — | No fix listed | CNA |
- SINAMICS Medium Voltage Products, Remote Access Vendor— Affected SINAMICS SL150: All versions, SINAMICS SM150: All versions, SINAMICS SM150i: All versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:sinamics_sl150_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:sinamics_sl150:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:sinamics_sm150_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:sinamics_sm150:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:sinamics_sm150i_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:sinamics_sm150i:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:sinamics_sl150_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:sinamics_sl150:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:sinamics_sm150_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:sinamics_sm150:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:sinamics_sm150i_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:sinamics_sm150i:-:*:*:*:*:*:*:* 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-2021-27388
- 2026-10-03 Alias added: GHSA-78x7-234w-r2hv
References
More Siemens Sinamics Sl150 Firmware vulnerabilities
- TI-2020-12433 Missing authentication in Siemens SIMATIC HMI Comfort Panels CVSS 3.1CRITICAL 9.8
- TI-2021-08877 A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\"… CVSS 3.1CRITICAL 9.8
- TI-2021-11481 Missing authentication in SINAMICS Medium Voltage Products CVSS 3.1CRITICAL 9.8
- TI-2021-08878 Uncontrolled resource consumption in Siemens SIMATIC HMI Comfort Outdoor Panels V15 7\" &… 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-2021-08879 Memory leak in Siemens SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" CVSS 3.1HIGH 7.5
Sources
- CVE-2021-27388 · CVE Program
- CVE-2021-27388 · NVD
- FIRST EPSS
- GHSA-78x7-234w-r2hv · 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