CVE-2025-62002 in Ransomware Containment
Summary
by MITRE • 12/18/2025
BullWall Ransomware Containment considers the number of files modified to trigger detection. An authenticated attacker could encrypt a single (possibly large) file without triggering detection if thresholds are configured to require multiple file changes. The number of files to trigger detection can be configured by the user. Versions 4.6.0.0, 4.6.0.6, 4.6.0.7, and 4.6.1.4 are affected. Other versions may also be affected.
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Analysis
by VulDB Data Team • 01/15/2026
The BullWall Ransomware Containment system represents a critical security vulnerability that undermines the fundamental integrity of file system monitoring and threat detection mechanisms. This vulnerability resides in the configuration-based detection thresholds that govern how the system responds to file modification activities. The flaw specifically targets the number of files required to trigger an alert, creating a potential exploitation vector where attackers can bypass security controls by manipulating the detection parameters. The affected versions 4.6.0.0, 4.6.0.6, 4.6.0.7, and 4.6.1.4 demonstrate a design weakness that allows authenticated users to exploit the system's reliance on configurable thresholds for triggering containment measures.
The technical implementation of this vulnerability stems from the system's failure to properly validate or enforce minimum file change thresholds during encryption operations. When an attacker authenticates to the system and initiates a ransomware attack, they can strategically target a single large file rather than multiple smaller files to avoid detection. This approach exploits the configurable nature of the detection parameters, allowing the threat actor to operate below the established threshold while still achieving their malicious objective. The vulnerability manifests because the system does not implement proper bounds checking or enforcement mechanisms that would prevent attackers from manipulating the detection criteria to their advantage.
From an operational impact perspective, this vulnerability creates a significant risk to organizations relying on BullWall for ransomware protection. The ability to encrypt single large files without triggering detection means that attackers can potentially bypass containment measures entirely while maintaining operational stealth. This flaw directly contradicts the core principle of defense in depth, where multiple detection points should prevent successful attacks. The vulnerability also introduces a potential pathway for privilege escalation attacks, as authenticated users could manipulate detection thresholds to create persistent backdoors or establish long-term access to compromised systems. The configuration flexibility that should enhance security becomes a liability when attackers can exploit the same configurability for malicious purposes.
Security professionals should consider this vulnerability in the context of the CWE-377 weakness category, specifically focusing on insecure handling of sensitive data and improper handling of file system operations. The ATT&CK framework would classify this as a technique involving privilege escalation and evasion through configuration manipulation, potentially falling under T1059 for command and scripting interpreter usage and T1566 for credential harvesting. Organizations should implement immediate mitigations including disabling or restricting the ability to modify detection thresholds, implementing additional monitoring for threshold changes, and establishing baseline configurations that prevent attackers from exploiting this weakness. The vulnerability also highlights the need for proper access controls and principle of least privilege enforcement to limit who can modify system parameters that directly impact security controls. Regular security assessments should include verification of detection threshold configurations to ensure they cannot be manipulated to bypass containment measures, and organizations should consider implementing automated alerting for any changes to critical security parameters.