CVE-2020-7586

A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versions < V5.6 SP2 HF3), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 HF2). A buffer overflow vulnerability could allow a local attacker to cause a Denial-of-Service situation. The security vulnerability could be exploited by an attacker with local access to the affected systems. Successful exploitation requires user privileges but no user interaction. The vulnerability could allow an attacker to compromise the availability of the system as well as to have access to confidential information.

• CWE-122
• CWE-787

• https://cert-portal.siemens.com/productcert/pdf/ssa-689942.pdfVendor Advisory
• https://us-cert.cisa.gov/ics/advisories/icsa-20-161-05
• https://www.us-cert.gov/ics/advisories/icsa-20-161-05Third Party Advisory, US Government Resource
• https://cert-portal.siemens.com/productcert/pdf/ssa-689942.pdfVendor Advisory
• https://us-cert.cisa.gov/ics/advisories/icsa-20-161-05
• https://www.us-cert.gov/ics/advisories/icsa-20-161-05Third Party Advisory, US Government Resource

Published

Jun 10, 2020

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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