Overview
The CVE-2025-46613 vulnerability is a significant security flaw in OpenPLC 3, an open-source PLC (Programmable Logic Controller) platform commonly used in industrial control systems. This vulnerability arises due to an issue in memory corruption and can lead to potential system compromise or data leakage, posing a serious risk to any organization using affected versions of the software.
Vulnerability Summary
CVE ID: CVE-2025-46613
Severity: High – CVSS 7.5
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
OpenPLC 3 | Versions through 64f9c11
How the Exploit Works
The CVE-2025-46613 vulnerability is triggered when a thread accesses handleConnections arguments after the parent stack frame becomes unavailable, resulting in memory corruption. An attacker can exploit this flaw remotely over a network without requiring any user interaction or special privileges, leading to unauthorized system access, data manipulation, or, in worst cases, a complete system compromise.
Conceptual Example Code
This is a conceptual example of how an attacker might exploit the vulnerability. This snippet doesn’t represent an actual exploit, but illustrates the potential threat:
POST /OpenPLC3/handleConnections HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "malicious_payload": "corrupted_memory_data" }In this case, the attacker is sending a malicious payload designed to corrupt memory data, exploiting the vulnerability in OpenPLC 3’s handleConnections function.
Mitigation Guidance
The recommended mitigation for CVE-2025-46613 is to apply the vendor patch once available. Until then, users can employ Web Application Firewalls (WAF) or Intrusion Detection Systems (IDS) to monitor network traffic and detect potential exploit attempts. Regular system and network audits should also be conducted to ensure no unauthorized activity has taken place.
