CVE-2016-9158

A vulnerability has been identified in SIMATIC S7-300 CPU family (All versions), SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 V6 and earlier CPU family (All versions), SIMATIC S7-400 V7 CPU family (All versions). Specially crafted packets sent to port 80/tcp could cause the affected devices to go into defect mode. A cold restart is required to recover the system.

• CWE-20
• CWE-20

• http://www.securityfocus.com/bid/94820
• http://www.securitytracker.com/id/1037434
• https://cert-portal.siemens.com/productcert/pdf/ssa-731239.pdf
• https://ics-cert.us-cert.gov/advisories/ICSA-16-348-05
• https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-731239.pdf
• http://www.securityfocus.com/bid/94820
• http://www.securitytracker.com/id/1037434
• https://cert-portal.siemens.com/productcert/pdf/ssa-731239.pdf
• https://ics-cert.us-cert.gov/advisories/ICSA-16-348-05
• https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-731239.pdf

Published

Dec 17, 2016

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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