CVE-2021-31892

Severity: high (CVSS 7.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-13 · updated 2026-06-17
Weakness: CWE-295

Description

A vulnerability has been identified in SINUMERIK Analyse MyCondition (All versions), SINUMERIK Analyze MyPerformance (All versions), SINUMERIK Analyze MyPerformance /OEE-Monitor (All versions), SINUMERIK Analyze MyPerformance /OEE-Tuning (All versions), SINUMERIK Integrate Client 02 (All versions >= V02.00.12 < 02.00.18), SINUMERIK Integrate Client 03 (All versions >= V03.00.12 < 03.00.18), SINUMERIK Integrate Client 04 (V04.00.02 and all versions >= V04.00.15 < 04.00.18), SINUMERIK Integrate for Production 4.1 (All versions < V4.1 SP10 HF3), SINUMERIK Integrate for Production 5.1 (V5.1), SINUMERIK Manage MyMachines (All versions), SINUMERIK Manage MyMachines /Remote (All versions), SINUMERIK Manage MyMachines /Spindel Monitor (All versions), SINUMERIK Manage MyPrograms (All versions), SINUMERIK Manage MyResources /Programs (All versions), SINUMERIK Manage MyResources /Tools (All versions), SINUMERIK Manage MyTools (All versions), SINUMERIK Operate V4.8 (All versions < V4.8 SP8), SINUMERIK Operate V4.93 (All versions < V4.93 HF7), SINUMERIK Operate V4.94 (All versions < V4.94 HF5), SINUMERIK Optimize MyProgramming /NX-Cam Editor (All versions). Due to an error in a third-party dependency the ssl flags used for setting up a TLS connection to a server are overwitten with wrong settings. This results in a missing validation of the server certificate and thus in a possible TLS MITM szenario.

Affected products

Siemens Sinumerik Analyse Mycondition Firmware: all versions
Siemens Sinumerik Analyze Myperformance Firmware: all versions
Siemens Sinumerik Integrate Client Firmware: from 2.00.12 before 2.00.18; from 3.00.12 before 3.00.18; from 4.00.15 before 4.00.18 — fixed in 2.00.18, 3.00.18, 4.00.18
Siemens Sinumerik Integrate For Production Firmware: through 4.1; 5.1
Siemens Sinumerik Manage Mymachines Firmware: all versions
Siemens Sinumerik Manage Myprograms Firmware: all versions
Siemens Sinumerik Manage Myresources Firmware: all versions
Siemens Sinumerik Manage Mytools Firmware: all versions
Siemens Sinumerik Operate Firmware: before 4.8; 4.8, 4.8-sp1, 4.8-sp2, 4.8-sp3, 4.8-sp4, 4.8-sp5 (+14) — fixed in 4.8
Siemens Sinumerik Optimize Myprogramming Firmware: all versions

How to fix

Upgrade to a fixed version: Siemens Sinumerik Integrate Client Firmware 2.00.18, 3.00.18, 4.00.18; Siemens Sinumerik Operate Firmware 4.8. Check the vendor advisory for mitigations.

References

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