What’s Vulnerable › Vulnerabilities

CVE-2020-15786

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-09-09 · updated 2026-06-17
• Weakness: CWE-307

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.

Affected products

• Siemens Simatic Hmi Basic Panels 2Nd Generation Firmware: through 14
• Siemens Simatic Hmi Comfort Panels Firmware: all versions
• Siemens Simatic Hmi Mobile Panels Firmware: all versions
• Siemens SIMATIC HMI Unified Comfort Panels: all versions

References

• https://cert-portal.siemens.com/productcert/pdf/ssa-542525.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-542525.pdf

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