Missing brute-force protection in Siemens SIMATIC HMI Basic Panels 2nd Generation
Priority MEDIUM 52CWE-307Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-307.
Summary
A vulnerability has been identified in SIMATIC HMI Basic Panels 2nd Generation (incl. SIPLUS variants) (All versions < V16), SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions <= V16), SIMATIC HMI Mobile Panels (All versions <= V16), SIMATIC HMI Unified Comfort Panels (All versions <= V16). Affected devices insufficiently block excessive authentication attempts. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01477 74th percentileScored 2026-11-07
Fix Fixed SIMATIC HMI Basic Panels 2nd Generation (incl. SIPLUS variants) (Siemens): V16
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
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 HMI Basic Panels 2nd Generation (incl. SIPLUS variants) | before V16 | V16 | Patch available | CNA |
| Siemens | SIMATIC HMI Comfort Panels (incl. SIPLUS variants) | up to V16 | — | No fix listed | CNA |
| Siemens | SIMATIC HMI Mobile Panels | up to V16 | — | No fix listed | CNA |
| Siemens | SIMATIC HMI Unified Comfort Panels | up to V16 | — | No fix listed | CNA |
- SIMATIC HMI Basic Panels 2nd Generation (incl. SIPLUS variants) VendorSiemens Affected before V16 Fixed in V16 Patch available CNA
- SIMATIC HMI Comfort Panels (incl. SIPLUS variants) VendorSiemens Affected up to V16 Fixed in — No fix listed CNA
- SIMATIC HMI Mobile Panels VendorSiemens Affected up to V16 Fixed in — No fix listed CNA
- SIMATIC HMI Unified Comfort Panels VendorSiemens Affected up to V16 Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:simatic_hmi_basic_panels_2nd_generation_firmware:*:*:*:*:*:*:*:* | up to 14 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_hmi_basic_panels_2nd_generation:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_hmi_comfort_panels_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_hmi_comfort_panels:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_hmi_mobile_panels_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_hmi_mobile_panels:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_hmi_united_comfort_panels_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_hmi_united_comfort_panels:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:simatic_hmi_basic_panels_2nd_generation_firmware:*:*:*:*:*:*:*:* Versions up to 14 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_hmi_basic_panels_2nd_generation:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_hmi_comfort_panels_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_hmi_comfort_panels:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_hmi_mobile_panels_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_hmi_mobile_panels:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_hmi_united_comfort_panels_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_hmi_united_comfort_panels:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
- Fix · CNA SIMATIC HMI Basic Panels 2nd Generation (incl. SIPLUS variants) (Siemens) Fixed in V16
Timeline
- 2026-10-02 Threatist record created from CVE-2020-15786
- 2026-10-03 Alias added: GHSA-9hp3-3v8x-gvhx
References
More Siemens Simatic Hmi Basic Panels 2nd Generation Firmware vulnerabilities
- TI-2021-02413 NULL pointer deref in signature_algorithms processing CVSS 3.1MEDIUM 5.9
Sources
- CVE-2020-15786 · CVE Program
- CVE-2020-15786 · NVD
- FIRST EPSS
- GHSA-9hp3-3v8x-gvhx · 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