TLS Private Key Accessible to External Parties - CEV-2023-2538



A CWE-552 "Files or Directories Accessible to External Parties” in the web interface of the Tyan S5552 BMC version 3.00 allows an attacker to retrieve the private key of the TLS certificate in use by the BMC via forced browsing.


An unauthenticated remote attacker would be able to perform Man-in-the-Middle (MitM) attacks against victims that access the web interface through HTTPS.

Issue Date

July 5, 2023


The vulnerability affects: Tyan S5552 BMC version 3.00

CVE Name


CVSS Details


CVSS Score



The affected component has reached end of life. It is suggested to replace it with a supported equivalent.



Andrea Palanca of Nozomi Networks

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