CVE-2020-15786
Summary
| CVE | CVE-2020-15786 |
|---|---|
| State | PUBLISHED |
| Assigner | siemens |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2020-09-09 19:15:19 UTC |
| Updated | 2026-06-02 20:16:24 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 9.8 CRITICAL from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.004220000 probability, percentile 0.623410000 (date 2026-06-02)
Problem Types: CWE-307 | CWE-307 CWE-307: Improper Restriction of Excessive Authentication Attempts
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | ADP | DECLARED | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 5 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
NoneAvailability
NoneAV:N/AC:L/Au:N/C:P/I:N/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Hardware | Siemens | Simatic Hmi Basic Panels 2nd Generation | - | All | All | All |
| Operating System | Siemens | Simatic Hmi Basic Panels 2nd Generation Firmware | All | All | All | All |
| Hardware | Siemens | Simatic Hmi Comfort Panels | - | All | All | All |
| Operating System | Siemens | Simatic Hmi Comfort Panels Firmware | All | All | All | All |
| Hardware | Siemens | Simatic Hmi Mobile Panels | - | All | All | All |
| Operating System | Siemens | Simatic Hmi Mobile Panels Firmware | All | All | All | All |
| Hardware | Siemens | Simatic Hmi United Comfort Panels | - | All | All | All |
| Operating System | Siemens | Simatic Hmi United Comfort Panels Firmware | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Siemens | SIMATIC HMI Basic Panels 2nd Generation Incl. SIPLUS Variants | affected All versions < V16 | Not specified |
| CNA | Siemens | SIMATIC HMI Comfort Panels Incl. SIPLUS Variants | affected All versions <= V16 | Not specified |
| CNA | Siemens | SIMATIC HMI Mobile Panels | affected All versions <= V16 | Not specified |
| CNA | Siemens | SIMATIC HMI Unified Comfort Panels | affected All versions <= V16 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| cert-portal.siemens.com/productcert/pdf/ssa-542525.pdf | af854a3a-2127-422b-91ae-364da2661108 | cert-portal.siemens.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 590442 Siemens SIMATIC HMI Products (Update A) Multiple Vulnerabilities (ICSA-20-252-06)