CVE-2022-40176

Severity: high (CVSS 8.0 v3.1)
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: 2022-10-11 · updated 2026-06-17
Weakness: CWE-78

Description

A vulnerability has been identified in Desigo PXM30-1 (All versions < V02.20.126.11-41), Desigo PXM30.E (All versions < V02.20.126.11-41), Desigo PXM40-1 (All versions < V02.20.126.11-41), Desigo PXM40.E (All versions < V02.20.126.11-41), Desigo PXM50-1 (All versions < V02.20.126.11-41), Desigo PXM50.E (All versions < V02.20.126.11-41), PXG3.W100-1 (All versions < V02.20.126.11-37), PXG3.W100-2 (All versions < V02.20.126.11-41), PXG3.W200-1 (All versions < V02.20.126.11-37), PXG3.W200-2 (All versions < V02.20.126.11-41). There exists an Improper Neutralization of Special Elements used in an OS Command with root privileges during a restore operation due to the missing validation of the names of files included in the input package. By restoring a specifically crafted package, a remote low-privileged attacker can execute arbitrary system commands with root privileges on the device, leading to a full compromise.

Affected products

Siemens Desigo Pxm30-1 Firmware: before 02.20.126.11-41 — fixed in 02.20.126.11-41
Siemens Desigo Pxm30.E Firmware: before 02.20.126.11-41 — fixed in 02.20.126.11-41
Siemens Desigo Pxm40-1 Firmware: before 02.20.126.11-41 — fixed in 02.20.126.11-41
Siemens Desigo Pxm40.E Firmware: before 02.20.126.11-41 — fixed in 02.20.126.11-41
Siemens Desigo Pxm50-1 Firmware: before 02.20.126.11-41 — fixed in 02.20.126.11-41
Siemens Desigo Pxm50.E Firmware: before 02.20.126.11-41 — fixed in 02.20.126.11-41
Siemens Pxg3.W100-1 Firmware: before 02.20.126.11-37 — fixed in 02.20.126.11-37
Siemens Pxg3.W100-2 Firmware: before 02.20.126.11-41 — fixed in 02.20.126.11-41
Siemens Pxg3.W200-1 Firmware: before 02.20.126.11-37 — fixed in 02.20.126.11-37
Siemens Pxg3.W200-2 Firmware: before 02.20.126.11-41 — fixed in 02.20.126.11-41

How to fix

Upgrade to a fixed version: Siemens Desigo Pxm30-1 Firmware 02.20.126.11-41; Siemens Desigo Pxm30.E Firmware 02.20.126.11-41; Siemens Desigo Pxm40-1 Firmware 02.20.126.11-41; Siemens Desigo Pxm40.E Firmware 02.20.126.11-41; Siemens Desigo Pxm50-1 Firmware 02.20.126.11-41; Siemens Desigo Pxm50.E Firmware 02.20.126.11-41; Siemens Pxg3.W100-1 Firmware 02.20.126.11-37; Siemens Pxg3.W100-2 Firmware 02.20.126.11-41; Siemens Pxg3.W200-1 Firmware 02.20.126.11-37; Siemens Pxg3.W200-2 Firmware 02.20.126.11-41. Check the vendor advisory for mitigations.

References

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