CVE-2023-5909 HIGH

CVE-2023-5909: Improper Validation of Certificate with Host Mismatch in PTC KEPServerEx

Vendor Ptc
Product KEPServerEX
Weakness CWE-297
Published November 30, 2023
Last update February 25, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

KEPServerEX does not properly validate certificates from clients which may allow unauthenticated users to connect.

Key dates

02Disclosure timeline

November 30, 2023 CVE published
February 25, 2026 Record updated