CVE-2025-51986 – FreeMODBUS Demo/LINUXTCP Infinite Loop Vulnerability

The following table lists the changes that have been made to the
CVE-2025-51986 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Aug. 14, 2025

    Action Type Old Value New Value
    Added Description An issue was discovered in the demo/LINUXTCP implementation of cwalter-at freemodbus v.2018-09-12 allowing attackers to reach an infinite loop via a crafted length value for a packet.
    Added Reference https://gist.github.com/jyjsunny/a9743a718ed3081b034c11201803f6b4
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