Vulnerability Details : 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.
Vulnerability category: Directory traversal
Products affected by CVE-2021-34594
- cpe:2.3:o:beckhoff:tf6100_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:beckhoff:ts6100_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-34594
0.57%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 67 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-34594
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.5
|
HIGH | AV:N/AC:L/Au:S/C:N/I:C/A:C |
8.0
|
9.2
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H |
1.2
|
5.2
|
CERT VDE | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H |
1.2
|
5.2
|
NIST |
CWE ids for CVE-2021-34594
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
-
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.Assigned by: info@cert.vde.com (Secondary)
References for CVE-2021-34594
-
https://cert.vde.com/en/advisories/VDE-2021-051/
VDE-2021-051 | CERT@VDEMitigation;Third Party Advisory
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