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CVE-2021-34594

MEDIUMCVSS 6.5/10EPSS 1.09%

Last modified

CVE-2021-34594 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 1.09% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
6.5/10

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

EPSS Probability
1.09%

61.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
BeckhoffTf6100 Firmware< 4.3.48.0
BeckhoffTs6100 Firmware< 4.3.48.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-34594?
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.
How severe is CVE-2021-34594?
CVE-2021-34594 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.09% probability of exploitation in the next 30 days.
How do I fix CVE-2021-34594?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-34594?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST