Threatsonar Anti Ransomware CVE-2026-5966

Requires authenticated access to the ThreatSonar Anti-Ransomware web management interface with low-privilege user credentials (PR:L per CVSS vector). Specifically, the attacker must have valid login credentials for any web console user account - not necessarily administrator-level privileges. The web interface must be network-accessible to the attacker (AV:N), either through internet exposure, VPN access, or internal network positioning. No user interaction required (UI:N) once authenticated. No special product configuration, non-default features, or specific deployment modes are indicated as prerequisites - exploitation targets standard file handling functionality in the web interface. LIMITS TO EXPLOITATION: Authentication barrier prevents anonymous internet-wide scanning and exploitation. Network access requirement means attackers need either credential compromise (phishing, brute force, credential stuffing) or insider positioning before exploitation becomes feasible.

Real-world risk is MODERATE despite the 7.2 CVSS score. Authentication requirement (PR:L) significantly reduces attack surface compared to unauthenticated vulnerabilities. EPSS score of 0.31% (54th percentile) indicates below-average exploitation probability in typical enterprise environments. CISA SSVC framework assessment supports measured response: exploitation status is 'none' (no public exploit identified), 'not automatable' (requires authenticated session context), but 'total technical impact' (arbitrary file deletion can disable security agent or destabilize protected systems). The primary concern is insider threat or credential compromise scenarios where attackers with web access could disable anti-ransomware protection before deploying actual ransomware. CRITICAL CONTEXT CONFLICT: This is anti-ransomware security software - deletion of its own configuration, quarantine files, or detection engines could facilitate ransomware attacks, elevating real-world impact beyond generic file deletion. No KEV listing or public POC identified, suggesting limited attacker interest to date. Priority should align with organizational reliance on ThreatSonar for ransomware defense and authentication controls around web interface.

An attacker with stolen or insider credentials authenticates to the ThreatSonar web console. They identify a file management or configuration interface that accepts file path parameters. By injecting traversal sequences like '../../../' into filename fields, they navigate outside intended directories to target critical files such as ThreatSonar's detection engine database, system ransomware signatures, or quarantine storage. Successful deletion of these files disables ransomware protection across the enterprise, allowing subsequent ransomware deployment to proceed undetected. Attack complexity is low (AC:L) requiring only basic understanding of path traversal techniques and authenticated web access.