CVE-2023-5909
Improper Validation of Certificate with Host Mismatch in PTC KEPServerEx
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
KEPServerEX does not properly validate certificates from clients which may allow unauthenticated users to connect.
| CWE | CWE-297 |
| Vendor | ptc |
| Product | kepserverex |
| Published | Nov 30, 2023 |
| Last Updated | Feb 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
PTC / KEPServerEX
0 ≤ 6.14.263.0
PTC / ThingWorx Kepware Server
0 ≤ 6.14.263.0
PTC / ThingWorx Industrial Connectivity
All versions
PTC / OPC-Aggregator
0 ≤ 6.14
PTC / ThingWorx Kepware Edge
0 ≤ 1.7
Rockwell Automation / KEPServer Enterprise
0 ≤ 6.14.263.0
GE Gigital / Industrial Gateway Server
0 ≤ 7.614
Software Toolbox / TOP Server
0 ≤ 6.14.263.0
References
Credits
Shawn Hoffman