CVE-2019-25618 in AdminExpress
Summary
by MITRE • 03/22/2026
AdminExpress 1.2.5 contains a denial of service vulnerability that allows local attackers to crash the application by submitting oversized input through the System Compare feature. Attackers can paste a large buffer of characters into the Folder Path field and trigger the comparison function to cause the application to become unresponsive or crash.
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Analysis
by VulDB Data Team • 03/23/2026
The vulnerability identified as CVE-2019-25618 resides within AdminExpress version 1.2.5, a system administration tool designed for comparing system configurations and files. This particular flaw represents a classic denial of service condition that can be exploited by local attackers who possess the ability to interact with the application's interface. The vulnerability specifically targets the System Compare feature, which is intended to facilitate the examination of differences between system components or file structures. The attack vector involves the manipulation of input validation mechanisms within the application's folder path handling functionality, where attackers can submit excessively large data payloads that exceed the application's processing capabilities.
The technical implementation of this vulnerability stems from inadequate input validation and buffer management within the System Compare module. When a user pastes an oversized buffer of characters into the Folder Path field, the application fails to properly sanitize or limit the input size before processing. This lack of proper bounds checking creates a condition where the application's memory allocation routines become overwhelmed, leading to either application unresponsiveness or complete system crash. The flaw demonstrates characteristics consistent with CWE-770, which addresses allocation of resources without limits or with inadequate limits, and also aligns with CWE-122, which deals with insufficient checking of the size of a buffer. The vulnerability is particularly concerning because it requires minimal privileges to exploit, as local access to the application is sufficient to trigger the condition.
The operational impact of CVE-2019-25618 extends beyond simple application disruption, potentially affecting system availability and operational continuity for administrators who rely on AdminExpress for routine system maintenance and configuration management. When the application becomes unresponsive or crashes, it prevents authorized users from performing critical system comparison tasks that are essential for security monitoring, compliance verification, and system integrity assessment. This vulnerability undermines the reliability of the administrative tool and could be leveraged by malicious actors to disrupt system operations, particularly in environments where administrators frequently use the comparison feature for security audits or change management processes. The local nature of the attack means that any user with access to the system can potentially exploit this vulnerability, making it a significant risk for environments with limited privilege controls or compromised local accounts.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and buffer size limitations within the application's codebase. System administrators should immediately update to the latest version of AdminExpress where this vulnerability has been addressed through proper input sanitization and memory management improvements. The fix should incorporate proper bounds checking mechanisms that prevent oversized inputs from being processed by the comparison function, while also implementing rate limiting or input size restrictions that prevent malicious or accidental oversized submissions. Additionally, organizations should consider implementing application hardening measures such as stack canaries, address space layout randomization, and input sanitization layers to provide defense in depth against similar buffer overflow conditions. From an operational security perspective, regular vulnerability assessments and penetration testing should be conducted to identify and remediate similar input validation weaknesses in other system administration tools and applications within the environment. The vulnerability also highlights the importance of following secure coding practices and adhering to the principle of least privilege in system administration tools, as local privilege escalation opportunities should be minimized through proper access controls and application design. Organizations should also consider implementing monitoring solutions that can detect abnormal application behavior patterns indicative of denial of service conditions, enabling rapid response to potential exploitation attempts.