CVE-2025-27237
HighCVSS 7.3Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
In Zabbix Agent and Agent 2 on Windows, the OpenSSL configuration file is loaded from a path writable by low-privileged users. This allows malicious modification and potential local privilege escalation by injecting a DLL.
Risk Assessment
A low-privileged user can modify the configuration and inject a DLL, leading to privilege escalation on the host running the Zabbix agent.
Recommendation
Secure the OpenSSL configuration file path so only privileged users can modify it. Update Zabbix Agent to a patched version.
Other vulnerabilities in Zabbix Agent
See all- CVE-2016-4338High
The MySQL user parameter configuration script in the Zabbix agent before version 2.0.18, 2.2.x before 2.2.13, and 3.0.x before 3.0.3, when used with a shell other than bash, allows attackers to execute arbitrary code or SQL commands via the mysql.size parameter.
- CVE-2026-59781High
When Zabbix Agent was installed on Windows into a custom installation directory, the installer did not verify whether the selected directory had secure access permissions. If the target directory allowed unauthorized users to modify its contents, an attacker could place a malicious DLL that could later be loaded by the application, resulting in DLL sideloading. The installer has been hardened to detect potentially unsafe installation directories and now requires explicit user confirmation before proceeding with installation in such locations.
- CVE-2026-23927Medium
A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session.
- CVE-2026-23924Medium
The Zabbix Agent 2 Docker plugin does not properly sanitize the 'docker.container_info' parameters when forwarding them to the Docker daemon. An attacker capable of invoking Agent 2 can read arbitrary files from running Docker containers by injecting them via the Docker archive API.
- CVE-2025-27234High
The Zabbix Agent 2 smartctl plugin does not properly sanitize smart.disk.get parameters, allowing an attacker to inject unexpected arguments into the smartctl command. In Zabbix 5.0 this allows for remote code execution.
- CVE-2025-27233Medium
The Zabbix Agent 2 smartctl plugin does not properly sanitize smart.disk.get parameters, allowing an attacker to inject unexpected arguments into the smartctl command. This can be used to leak the NTLMv2 hash from a Windows system.
Original NVD description (English source)
In Zabbix Agent and Agent 2 on Windows, the OpenSSL configuration file is loaded from a path writable by low-privileged users, allowing malicious modification and potential local privilege escalation by injecting a DLL.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS