CVE-2020-7587

Severity: high (CVSS 8.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-07-14 · updated 2026-06-17
Weakness: CWE-400

Description

A vulnerability has been identified in Opcenter Execution Discrete (All versions < V3.2), Opcenter Execution Foundation (All versions < V3.2), Opcenter Execution Process (All versions < V3.2), Opcenter Intelligence (All versions < V3.3), Opcenter Quality (All versions < V11.3), Opcenter RD&L (V8.0), SIMATIC IT LMS (All versions < V2.6), SIMATIC IT Production Suite (All versions < V8.0), SIMATIC Notifier Server for Windows (All versions), SIMATIC PCS neo (All versions < V3.0 SP1), SIMATIC STEP 7 (TIA Portal) V15 (All versions < V15.1 Update 5), SIMATIC STEP 7 (TIA Portal) V16 (All versions < V16 Update 2), SIMOCODE ES V15.1 (All versions < V15.1 Update 4), SIMOCODE ES V16 (All versions < V16 Update 1), Soft Starter ES V15.1 (All versions < V15.1 Update 3), Soft Starter ES V16 (All versions < V16 Update 1). Sending multiple specially crafted packets to the affected service could cause a partial remote denial-of-service, that would cause the service to restart itself. On some cases the vulnerability could leak random information from the remote service.

Affected products

Siemens Opcenter Execution Discrete: before 3.2 — fixed in 3.2
Siemens Opcenter Execution Foundation: before 3.2 — fixed in 3.2
Siemens Opcenter Execution Process: before 3.2 — fixed in 3.2
Siemens Opcenter Intelligence: before 3.3 — fixed in 3.3
Siemens Opcenter Quality: before 11.3 — fixed in 11.3
Siemens Opcenter RD&L: 8.0
Siemens SIMATIC IT LMS: before 2.6 — fixed in 2.6
Siemens SIMATIC IT Production Suite: before 8.0 — fixed in 8.0
Siemens Simatic Notifier Server: all versions
Siemens SIMATIC PCS neo: before 3.0; 3.0 — fixed in 3.0
Siemens SIMATIC STEP 7 (TIA Portal): from 15 before 15.1; 15.1, 16, 16-update1 — fixed in 15.1
Siemens Simocode Es: before 15.1; 15.1, 16 — fixed in 15.1
Siemens Soft Starter Es: before 15.1; 15.1 — fixed in 15.1

How to fix

Upgrade to a fixed version: Siemens Opcenter Execution Discrete 3.2; Siemens Opcenter Execution Foundation 3.2; Siemens Opcenter Execution Process 3.2; Siemens Opcenter Intelligence 3.3; Siemens Opcenter Quality 11.3; Siemens SIMATIC IT LMS 2.6; Siemens SIMATIC IT Production Suite 8.0; Siemens SIMATIC PCS neo 3.0; Siemens SIMATIC STEP 7 (TIA Portal) 15.1; Siemens Simocode Es 15.1; Siemens Soft Starter Es 15.1. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2020-7587 or the next vulnerability affects your stack