Medium severity · published Dec 12, 2019
CVE-2019-13945
A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl
6.8
CVSS
0.5%
EPSS
No
On KEV
Description
A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-1200 CPU family < V4.x (incl. SIPLUS variants) (All versions), SIMATIC S7-1200 CPU family V4.x (incl. SIPLUS variants) (All versions with Function State (FS) < 11), SIMATIC S7-200 SMART CPU CR20s (6ES7 288-1CR20-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU CR30s (6ES7 288-1CR30-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU CR40 (6ES7 288-1CR40-0AA0) (All versions <= V2.2.2 and Function State (FS) <= 8), SIMATIC S7-200 SMART CPU CR40s (6ES7 288-1CR40-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU CR60 (6ES7 288-1CR60-0AA0) (All versions <= V2.2.2 and Function State (FS) <= 10), SIMATIC S7-200 SMART CPU CR60s (6ES7 288-1CR60-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU SR20 (6ES7 288-1SR20-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 11), SIMATIC S7-200 SMART CPU SR30 (6ES7 288-1SR30-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 10), SIMATIC S7-200 SMART CPU SR40 (6ES7 288-1SR40-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 10), SIMATIC S7-200 SMART CPU SR60 (6ES7 288-1SR60-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 12), SIMATIC S7-200 SMART CPU ST20 (6ES7 288-1ST20-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 9), SIMATIC S7-200 SMART CPU ST30 (6ES7 288-1ST30-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 9), SIMATIC S7-200 SMART CPU ST40 (6ES7 288-1ST40-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 8), SIMATIC S7-200 SMART CPU ST60 (6ES7 288-1ST60-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 8), SIMATIC S7-200 SMART CPU family (All versions). There is an access mode used during manufacturing of the affected devices that allows additional diagnostic functionality. The security vulnerability could be exploited by an attacker with physical access to the UART interface during boot process.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Physical
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SS
S7-200 Smart Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-1200 Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-200 Smart Cpu Cr20s Firmware · Siemens
through 2.3.0 · source: NVD
SS
Simatic S7-200 Smart Cpu Cr30s Firmware · Siemens
through 2.3.0 · source: NVD
SS
Simatic S7-200 Smart Cpu Cr40 Firmware · Siemens
through 2.2.2 · source: NVD
SS
Simatic S7-200 Smart Cpu Cr40s Firmware · Siemens
through 2.3.0 · source: NVD
SS
Simatic S7-200 Smart Cpu Cr60 Firmware · Siemens
through 2.2.2 · source: NVD
SS
Simatic S7-200 Smart Cpu Cr60s Firmware · Siemens
through 2.3.0 · source: NVD
SS
Simatic S7-200 Smart Cpu Sr20 Firmware · Siemens
through 2.5.0 · source: NVD
SS
Simatic S7-200 Smart Cpu Sr30 Firmware · Siemens
through 2.5.0 · source: NVD
SS
Simatic S7-200 Smart Cpu Sr40 Firmware · Siemens
through 2.5.0 · source: NVD
SS
Simatic S7-200 Smart Cpu Sr60 Firmware · Siemens
through 2.5.0 · source: NVD