CVE-2025-15616 is a vulnerability classified under CWE-94 (Improper Control of Generation of Code), specifically manifesting as multiple shell injection and untrusted search path vulnerabilities in Wazuh's wazuh-agent and wazuh-manager software. These vulnerabilities exist in versions starting from 2.1.0 up to but not including 4.8.0. The affected components include the logcollector configuration, maild SMTP server tags, and Kaspersky AR script parameters. Attackers can exploit these flaws by injecting malicious shell commands through crafted configuration files, SMTP server settings, or custom flags. This injection leads to arbitrary command execution on the host system, effectively allowing remote code execution (RCE) without requiring user interaction or authentication. The vulnerability stems from insufficient validation and sanitization of inputs that are used in code generation or shell command execution contexts, combined with untrusted search path usage that can be manipulated to execute attacker-controlled binaries. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:H) but no user interaction (UI:N), with high impact on confidentiality, integrity, and availability. No patches are currently linked, and no known exploits have been reported in the wild, but the vulnerability's nature and scope make it a critical concern for organizations using affected Wazuh versions for security monitoring and log collection.

The exploitation of CVE-2025-15616 can have severe consequences for organizations worldwide. Successful remote code execution allows attackers to gain unauthorized control over affected systems, potentially leading to data breaches, system compromise, lateral movement within networks, and disruption of security monitoring capabilities. Since Wazuh is widely deployed for intrusion detection, log analysis, and compliance monitoring, compromising its agent or manager can blind defenders to ongoing attacks or allow attackers to manipulate logs to cover their tracks. The vulnerability's ability to be exploited remotely without user interaction or authentication significantly increases the attack surface and risk. Organizations in critical infrastructure sectors, government, finance, healthcare, and large enterprises relying on Wazuh for security operations are particularly at risk. The impact extends to confidentiality, integrity, and availability of monitored systems and data, potentially enabling espionage, sabotage, or ransomware attacks.

To mitigate CVE-2025-15616, organizations should take immediate and specific actions beyond generic advice: 1) Restrict network access to Wazuh management and agent configuration interfaces to trusted administrators only, using network segmentation and firewall rules. 2) Implement strict input validation and sanitization on all configuration files, SMTP server tags, and script parameters to prevent injection of malicious commands. 3) Avoid using untrusted search paths by specifying absolute paths for binaries and scripts invoked by Wazuh components. 4) Monitor logs and alerts for unusual command execution patterns or configuration changes indicative of exploitation attempts. 5) Deploy application whitelisting and endpoint protection solutions to detect and block unauthorized code execution. 6) Upgrade to Wazuh versions 4.8.0 or later once patches addressing these vulnerabilities are released. 7) Conduct regular security audits and penetration testing focused on configuration management and code injection vectors within Wazuh deployments. 8) Educate administrators on secure configuration practices and the risks of injecting untrusted data into system commands.