CVE-2020-28397

MEDIUM

SIMATIC S7-1500 CPU family < 2.9.2 - Unauthenticated Information Disclosure via PLC Program Variable Extraction

Title source: llm
STIX 2.1

Description

A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7 PLCSIM Advanced (All versions > V2 < V4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (Version V4.4), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions > V2.5 < V2.9.2), SIMATIC S7-1500 Software Controller (All versions > V2.5 < V21.9), TIM 1531 IRC (incl. SIPLUS NET variants) (Version V2.1). Due to an incorrect authorization check in the affected component, an attacker could extract information about access protected PLC program variables over port 102/tcp from an affected device when reading multiple attributes at once.

References (1)

Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://cert-portal.siemens.com/productcert/pdf/ssa-865327.pdf

Scores

CVSS v3 5.3
EPSS 0.0018
EPSS Percentile 39.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Details

CWE
CWE-863
Status published
Products (50)
siemens/cpu1510sp_f-1_firmware 2.5 - 2.9.2
siemens/cpu_1211c_firmware 4.4
siemens/cpu_1212c_firmware 4.4
siemens/cpu_1212fc_firmware 4.4
siemens/cpu_1214c_firmware 4.4
siemens/cpu_1214fc_firmware 4.4
siemens/cpu_1215c_firmware 4.4
siemens/cpu_1215fc_firmware 4.4
siemens/cpu_1217c_firmware 4.4
siemens/cpu_1504d_tf_firmware < 2.9.2
... and 40 more
Published Aug 10, 2021
Tracked Since Feb 18, 2026