Exploit: Nssm-2.24
binary with a backdoor. Upon the next service restart, the malicious binary would execute with privileges. Unquoted Service Paths:
The version 2.24 release fails to rotate log files larger than 4GB. This bug could be exploited to fill available disk space if an attacker can cause excessive log generation, potentially leading to denial-of-service conditions on systems with limited storage.
Ensure that the directory containing nssm.exe and any child directories are not writable by unprivileged users. On Windows, use icacls to check for overly permissive ACEs. The command below shows how to list permissions for the NSSM directory:
), Windows attempts to execute files at every "break" in the path. The Impact : If an attacker has write access to a directory like , they can place a malicious executable named Program.exe nssm-2.24 exploit
To protect yourself from the NSSM-2.24 exploit, follow these best practices:
The NSSM-2.24 exploit works by taking advantage of a buffer overflow vulnerability in the nssm.exe executable. When a service configuration file is processed by NSSM, it uses a buffer to store the configuration data. However, the buffer is not properly validated, allowing an attacker to overflow the buffer with malicious data.
The NSSM-2.24 exploit is a vulnerability that was discovered in the NSSM service manager, specifically in version 2.24. This vulnerability allows an attacker to execute arbitrary code on a system with NSSM installed, potentially leading to a complete takeover of the system. binary with a backdoor
The NSSM-2.24 exploit has significant implications for Windows systems that use the NSSM service manager. If exploited, an attacker can gain unauthorized access to sensitive areas of the system, leading to:
: The attacker locates the nssm.exe binary installed as part of the DaUM-WINDOWS-SERVICE with improperly configured permissions that allow modification or replacement by non-administrative users.
To prevent exploitation of the NSSM-2.24 vulnerability, users can take the following measures: This bug could be exploited to fill available
The "nssm-2.24 exploit" refers to a potential vulnerability in NSSM (Non-Sucking Service Manager) version 2.24. NSSM is a service manager for Windows that allows you to run and manage services on Windows systems, similar to how services are managed on Unix-like systems.
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#include <windows.h> #include <stdio.h>
CVE-2025-41686 specifically affects Phoenix Contact's DaUM product (Model 1542953) in versions earlier than 2025.3.1. However, the vulnerability pattern—improper inherited permissions on NSSM binaries embedded within third-party software installations—has broader implications. Security researchers have identified similar misconfigurations affecting:
NSSM (Non-Sucking Service Manager) version 2.24 does not have a unique, built-in remote code execution exploit, it is frequently involved in Local Privilege Escalation (LPE)
