Medium severity · published Aug 10, 2021
CVE-2020-28397
A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl
5.3
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
C1
Cpu 1211c Firmware · Siemens
4.4 · source: NVD
C1
Cpu 1212c Firmware · Siemens
4.4 · source: NVD
C1
Cpu 1212fc Firmware · Siemens
4.4 · source: NVD
C1
Cpu 1214c Firmware · Siemens
4.4 · source: NVD
C1
Cpu 1214fc Firmware · Siemens
4.4 · source: NVD
C1
Cpu 1215c Firmware · Siemens
4.4 · source: NVD
C1
Cpu 1215fc Firmware · Siemens
4.4 · source: NVD
C1
Cpu 1217c Firmware · Siemens
4.4 · source: NVD
C1
Cpu 1504d TF Firmware · Siemens
before 2.9.2 · source: NVD
C1
Cpu 1507d TF Firmware · Siemens
before 2.9.2 · source: NVD
C1
Cpu 1510sp-1pn Firmware · Siemens
2.5 before 2.9.2 · source: NVD
C1
Cpu 1511-1pn Firmware · Siemens
2.5 before 2.9.2; 2.5 before 2.9.2 · source: NVD