CVE-2021-34594

6.5 mediumEPSS 1.1%

Medium (6.5) in beckhoff. EPSS 1.1% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

EPSS: 1.1% chance of exploitation in the next 30 days; higher than 66% of CVEs (scores of 2026-10-31)
CWEs: CWE-22, CWE-23
Published: 2021-11-04
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

beckhoff:tf6100_firmware
beckhoff:ts6100_firmware

References

https://cert.vde.com/en/advisories/VDE-2021-051/
https://cert.vde.com/en/advisories/VDE-2021-051/

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