CVE-2020-7586

HIGH

Siemens Simatic Step 7 < 5.6 - Out-of-Bounds Write

Title source: rule
STIX 2.1

Description

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.

References (3)

Core 3
Core References
Third Party Advisory, US Government Resource x_refsource_misc
https://www.us-cert.gov/ics/advisories/icsa-20-161-05
Third Party Advisory, US Government Resource x_refsource_confirm
https://us-cert.cisa.gov/ics/advisories/icsa-20-161-05

Scores

CVSS v3 7.8
EPSS 0.0015
EPSS Percentile 35.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-122 CWE-787
Status published
Products (6)
siemens/simatic_pcs_7
siemens/simatic_process_device_manager
siemens/simatic_step_7 5.6 (4 CPE variants)
siemens/simatic_step_7 < 5.6
siemens/sinamics_starter 5.4
siemens/sinamics_starter < 5.4
Published Jun 10, 2020
Tracked Since Feb 18, 2026