CVE-2020-7586: Siemens SIMATIC Pcs 7

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Siemens SIMATIC Pcs 7: any version
• Siemens SIMATIC Process Device Manager: any version
• Siemens SIMATIC Step 7: before 5.6 (fixed in 5.6); version 5.6 only
• Siemens Sinamics Starter: before 5.4 (fixed in 5.4); version 5.4 only

Published 2020-06-10. Last modified 2026-06-17.