CVE-2025-41649

Vulnerability

Overview

CVE-2025-41649 describes a buffer overflow vulnerability in Weidmueller industrial ethernet switches. The root cause is insufficient input validation, which allows an attacker to write data beyond the bounds of a buffer. This issue is part of a set of multiple vulnerabilities affecting these devices, as detailed in the vendor advisory [1].

Exploitation

The vulnerability can be exploited by an unauthenticated remote attacker. No authentication or prior access is required; the attacker only needs network connectivity to the affected switch. By sending specially crafted network traffic, the attacker can trigger the buffer overflow, leading to memory corruption.

Impact

Successful exploitation results in a denial-of-service (DoS) condition. The affected switch may crash or become unresponsive, disrupting network operations. This can have significant consequences in industrial environments where network reliability is critical.

Mitigation

Weidmueller has released firmware updates to address this and other vulnerabilities. Users are advised to apply the latest firmware provided by the vendor to mitigate the risk. The advisory [1] contains details on affected products and the remediation.