Medium severity6.5NVD Advisory· Published Nov 4, 2021· Updated Jun 17, 2026

CVE-2021-34594

Description

TwinCAT OPC UA Server in TF6100 and TS6100 in product versions before 4.3.48.0 or with TcOpcUaServer versions below 3.2.0.194 are prone to a relative path traversal that allow administrators to create or delete any files on the system.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Beckhoff Automation/TwinCAT OPC UA Serverv5
Range: TF6100
Beckhoff/TS6100llm-create
Range: <4.3.48.0
Beckhoff/Twincat Opc Ua Serverllm-fuzzy
Range: <4.3.48.0 or <3.2.0.194
Beckhoff/TF6100llm-create
Range: <4.3.48.0
Beckhoff/Tf6100 Firmware
cpe:2.3:o:beckhoff:tf6100_firmware:*:*:*:*:*:*:*:*
Range: <4.3.48.0
Beckhoff/Ts6100 Firmware
cpe:2.3:o:beckhoff:ts6100_firmware:*:*:*:*:*:*:*:*
Range: <4.3.48.0

Patches

Vulnerability mechanics

References

cert.vde.com/en/advisories/VDE-2021-051/nvdMitigationThird Party Advisory

News mentions

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cvss	0.423
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000