CVE-2025-52657 in MyXalytics
Summary
by MITRE • 09/07/2026
HCL MyXalytics was affected by Potential DOS Vulnerability. It allows users to input data without any restriction on the number of characters which can impact system performance or availability.
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Analysis
by VulDB Data Team • 09/07/2026
The vulnerability identified in HCL MyXalytics represents a classic instance of insufficient input validation, specifically categorized under CWE-20 Improper Input Validation and more precisely as CWE-787 Out-of-bounds Write if the underlying implementation fails to handle buffer limits correctly during data ingestion. This flaw stems from an architectural oversight where the application interface accepts user-supplied data without enforcing strict length constraints or character count limitations. In a robust security posture, any external input vector must be sanitized and validated against predefined schemas before being processed by the backend systems. The absence of these controls allows malicious actors to submit payloads that exceed expected memory allocation thresholds or processing capacities, directly triggering resource exhaustion conditions.
From an operational perspective, this lack of restriction on character count can lead to significant Denial of Service scenarios. When a user inputs data with an excessively large number of characters, the system may attempt to allocate disproportionate amounts of memory or CPU cycles to process the request. This behavior can cause the application server to become unresponsive, crash, or enter into a state where it cannot serve legitimate users. The impact extends beyond simple performance degradation; in severe cases, repeated exploitation could lead to complete service outages, affecting business continuity and eroding user trust in the analytics platform's reliability. Such vulnerabilities are particularly dangerous because they can often be triggered remotely without authentication if proper access controls are not also enforced alongside input validation measures.
This vulnerability aligns with several entries in the MITRE ATT&CK framework, most notably T1496 Resource Hijacking where an adversary uses computing resources to disrupt availability or perform other malicious activities such as cryptocurrency mining by exhausting system resources. It also relates to T1059 Command and Scripting Interpreter if the oversized input is part of a larger attack chain aimed at achieving code execution through buffer overflow techniques, although the primary reported impact here is focused on availability rather than confidentiality or integrity breaches. Understanding these mappings helps security teams prioritize remediation efforts based on established threat intelligence models that categorize risks by their potential for disruption and exploitation complexity.
To mitigate this vulnerability, developers must implement strict input validation mechanisms at both the client-side interface and server-side processing layers. This includes enforcing maximum length limits on all text fields that accept user data, ensuring that these limits are consistent across different entry points to prevent bypass attempts. Additionally, implementing rate limiting can help curb rapid-fire requests designed to exhaust resources even if individual payloads are within acceptable bounds but collectively cause overload. Deploying Web Application Firewalls with rules tuned to detect anomalous input sizes or unusual traffic patterns associated with resource exhaustion attacks provides an additional layer of defense-in-depth. Regular security testing using dynamic application security scanning tools can help identify such gaps in validation logic before they reach production environments, ensuring that the platform remains resilient against availability-focused threats.