CVE-2020-15782

A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.5.0), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V2.9.2), SIMATIC S7-1500 Software Controller (All versions < V21.9), SIMATIC S7-PLCSIM Advanced (All versions < V4.0), SINAMICS PERFECT HARMONY GH180 Drives (Drives manufactured before 2021-08-13), SINUMERIK MC (All versions < V6.15), SINUMERIK ONE (All versions < V6.15). Affected devices are vulnerable to a memory protection bypass through a specific operation. A remote unauthenticated attacker with network access to port 102/tcp could potentially write arbitrary data and code to protected memory areas or read sensitive data to launch further attacks.

• CWE-119

• https://cert-portal.siemens.com/productcert/pdf/ssa-434534.pdfPatch, Vendor Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-434535.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-434536.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-434534.pdfPatch, Vendor Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-434535.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-434536.pdf

Published

May 28, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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