CVE-2019-6568

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-04-17 · updated 2026-06-17
Weakness: CWE-125

Description

The webserver of the affected devices contains a vulnerability that may lead to a denial of service condition. An attacker may cause a denial of service situation which leads to a restart of the webserver of the affected device. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the device.

Affected products

Siemens Cp1604 Firmware: all versions
Siemens Cp1616 Firmware: all versions
Siemens Simatic Cp343-1 Advanced Firmware: all versions
Siemens Simatic Cp443-1 Advanced Firmware: all versions
Siemens Simatic Cp443-1 Firmware: all versions
Siemens Simatic Cp443-1 Opc Ua: all versions
Siemens Simatic Et 200 Sp Open Controller Cpu 1515Sp Pc2 Firmware: before 2.7 — fixed in 2.7
Siemens Simatic Et 200 Sp Open Controller Cpu 1515Sp Pc Firmware: before 2.1.6 — fixed in 2.1.6
Siemens Simatic Hmi Comfort Outdoor Panels Firmware: before 15.1; 15.1 — fixed in 15.1
Siemens Simatic Hmi Comfort Panels Firmware: before 15.1; 15.1 — fixed in 15.1
Siemens Simatic Hmi Ktp Mobile Panels Ktp400F Firmware: before 15.1; 15.1 — fixed in 15.1
Siemens Simatic Hmi Ktp Mobile Panels Ktp700 Firmware: before 15.1; 15.1 — fixed in 15.1
Siemens Simatic Hmi Ktp Mobile Panels Ktp700F Firmware: before 15.1; 15.1 — fixed in 15.1
Siemens Simatic Hmi Ktp Mobile Panels Ktp900 Firmware: before 15.1; 15.1 — fixed in 15.1
Siemens Simatic Hmi Ktp Mobile Panels Ktp900F Firmware: before 15.1; 15.1 — fixed in 15.1
Siemens SIMATIC IPC DiagMonitor: before 5.1.3 — fixed in 5.1.3
Siemens Simatic Rf181-Eip Firmware: all versions
Siemens Simatic Rf182C Firmware: all versions
Siemens Simatic Rf185C Firmware: before 1.1.0 — fixed in 1.1.0
Siemens Simatic Rf186C Firmware: before 1.1.0 — fixed in 1.1.0
Siemens Simatic Rf188C Firmware: before 1.1.0 — fixed in 1.1.0
Siemens Simatic Rf600R Firmware: before 3.2.1 — fixed in 3.2.1
Siemens SIMATIC S7-1500 CPU: before 2.6.1 — fixed in 2.6.1
Siemens SIMATIC S7-1500 Software Controller: before 2.7 — fixed in 2.7
Siemens Simatic S7-1500F Firmware: before 2.6.1 — fixed in 2.6.1
Siemens Simatic S7-1500S Firmware: before 2.6.1 — fixed in 2.6.1
Siemens Simatic S7-1500T Firmware: before 2.6.1 — fixed in 2.6.1
Siemens Simatic S7-300 Firmware: before 3.3.17 — fixed in 3.3.17
Siemens Simatic S7-400 Pn/Dp Firmware: all versions
Siemens Simatic S7-400 Pn Firmware: all versions

How to fix

Upgrade to a fixed version: Siemens Simatic Et 200 Sp Open Controller Cpu 1515Sp Pc2 Firmware 2.7; Siemens Simatic Et 200 Sp Open Controller Cpu 1515Sp Pc Firmware 2.1.6; Siemens Simatic Hmi Comfort Outdoor Panels Firmware 15.1; Siemens Simatic Hmi Comfort Panels Firmware 15.1; Siemens Simatic Hmi Ktp Mobile Panels Ktp400F Firmware 15.1; Siemens Simatic Hmi Ktp Mobile Panels Ktp700 Firmware 15.1; Siemens Simatic Hmi Ktp Mobile Panels Ktp700F Firmware 15.1; Siemens Simatic Hmi Ktp Mobile Panels Ktp900 Firmware 15.1; Siemens Simatic Hmi Ktp Mobile Panels Ktp900F Firmware 15.1; Siemens SIMATIC IPC DiagMonitor 5.1.3; Siemens Simatic Rf185C Firmware 1.1.0; Siemens Simatic Rf186C Firmware 1.1.0. Check the vendor advisory for mitigations.

References

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