CVE-2019-25307 in WorkgroupMail
Summary
by MITRE • 02/11/2026
WorkgroupMail 7.5.1 contains an unquoted service path vulnerability in its Windows service configuration that allows local attackers to potentially execute arbitrary code. Attackers can exploit the unquoted binary path to inject malicious executables that will be run with LocalSystem privileges during service startup.
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Analysis
by VulDB Data Team • 02/11/2026
The vulnerability identified as CVE-2019-25307 resides within WorkgroupMail version 7.5.1 and represents a critical security flaw related to service path configuration on Windows systems. This issue manifests as an unquoted service path vulnerability that occurs when Windows service binaries are configured without proper quotation marks around their full paths. The flaw specifically affects how the Windows service control manager resolves executable paths during service startup operations. When a service binary path contains spaces and lacks proper quotation marks, the operating system attempts to resolve the path by searching through directories in the system PATH environment variable until it finds an executable with the first component of the path as its name. This behavior creates a significant attack surface where malicious actors can exploit the path resolution mechanism to gain unauthorized code execution privileges.
The technical implementation of this vulnerability stems from improper service configuration practices within the WorkgroupMail software installation process. When Windows encounters a service binary path that is not properly quoted, it treats the path as a series of directory components rather than a single executable file path. The service control manager will first attempt to execute the binary from the directory specified by the first component of the path, potentially allowing an attacker to place a malicious executable with the same name as the first directory component. This vulnerability directly maps to CWE-428, which describes the weakness of unquoted service paths in Windows systems, and aligns with ATT&CK technique T1036.004 for masquerading through service execution. The flaw is particularly dangerous because it allows attackers to execute code with LocalSystem privileges, which are the highest privileges available in Windows environments and provide complete system access.
The operational impact of this vulnerability extends beyond simple privilege escalation as it provides attackers with a persistent foothold within target systems. Local attackers who can access the system with basic user privileges can exploit this weakness to elevate their access level to SYSTEM level, effectively compromising the entire machine. Once exploited, the malicious code will execute automatically during service startup, creating a persistent backdoor that can survive system reboots and remain undetected by standard security monitoring tools. The vulnerability affects Windows systems running WorkgroupMail 7.5.1 where the service is configured with unquoted paths, making it particularly concerning for enterprise environments where multiple users may have access to the system. The attack vector requires local system access and knowledge of the specific service configuration, but the privilege escalation potential makes it attractive to adversaries seeking long-term access to compromised systems. The vulnerability is classified as a medium severity issue in terms of exploitability but represents a critical risk due to the elevated privileges it can provide.
Mitigation strategies for CVE-2019-25307 should focus on immediate service path configuration remediation and comprehensive system hardening measures. The primary fix involves properly quoting the service binary paths in the Windows registry or configuration files to prevent the path resolution ambiguity that enables exploitation. System administrators should verify all service paths using tools like sc query or PowerShell commands to identify and correct unquoted paths. Additionally, implementing the principle of least privilege through service account configuration and regular security audits can reduce the attack surface. Organizations should also deploy automated monitoring solutions that can detect unusual service execution patterns or unauthorized modifications to service configurations. The remediation process must include updating the WorkgroupMail software to a version that properly handles service path quoting, as well as implementing security configurations that align with industry best practices such as those outlined in the Center for Internet Security (CIS) benchmarks. Regular penetration testing and vulnerability assessments should be conducted to identify similar path configuration issues across other installed services and applications. This vulnerability demonstrates the critical importance of proper service configuration management and highlights the need for continuous security awareness training for system administrators to prevent such configuration errors from occurring in the first place.