CVE-2026-64196 in DASYLab
Summary
by MITRE • 09/04/2026
There is an out-of-bounds write vulnerability in DASYLab due to improper validation of user-supplied data, resulting in a write past the end of an allocated heap. Successful exploitation requires an attacker to get a user to open a specially crafted .DSB file. This issue affects all versions before 2026.0.0.
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Analysis
by VulDB Data Team • 09/04/2026
The vulnerability identified as an out-of-bounds write in DASYLab represents a critical memory safety flaw stemming from insufficient validation of external inputs, specifically within the processing logic for .DSB project files. This type of defect is classically categorized under CWE-787: Out-of-Bounds Write, which occurs when software writes data to a memory location beyond the intended boundary of an allocated buffer. In this specific instance, the application fails to adequately verify the size or structure of user-supplied data contained within the .DSB file before attempting to write it into heap memory. This lack of rigorous bounds checking allows maliciously crafted files to trigger a write operation that exceeds the limits of the pre-allocated heap segment, leading to corruption of adjacent memory structures.
From an operational perspective, this vulnerability poses a severe risk because exploitation relies on social engineering tactics rather than remote network access. An attacker must convince a target user to open a specially constructed .DSB file using DASYLab software. Once opened, the application processes the malformed data and executes the out-of-bounds write operation. The immediate technical consequence is heap corruption, which can manifest in various ways depending on memory layout and allocator behavior. Common outcomes include application crashes leading to denial of service, or more critically, arbitrary code execution if an attacker can precisely control the overwritten memory contents to hijack program flow. This aligns with ATT&CK technique T1203: Exploitation for Client Execution, where adversaries leverage vulnerabilities in client-side applications to gain initial access by tricking users into running malicious files.
The impact of this vulnerability extends beyond simple application instability. Successful exploitation can allow an attacker to execute arbitrary code on the victim's system with the privileges of the user running DASYLab. This could lead to full system compromise, data exfiltration, or installation of persistent malware backdoors. Given that DASYLab is often used in industrial and scientific environments for data acquisition and control systems, a successful exploit could potentially disrupt critical operations if such software is integrated into broader operational technology networks. The vulnerability affects all versions prior to 2026.0.0, indicating a long-standing issue in the codebase related to input validation practices for file parsing routines.
Mitigation strategies should focus on both immediate remediation and long-term secure development practices. Users must upgrade DASYLab to version 2026.0.0 or later, where this specific out-of-bounds write flaw has been addressed through improved input sanitization and bounds checking mechanisms. Until the update is applied, organizations should enforce strict policies regarding the opening of .DSB files from untrusted sources. Implementing application whitelisting can prevent unauthorized instances of DASYLab from executing or restrict their ability to access certain file types. Additionally, deploying endpoint detection and response solutions with behavioral analysis capabilities may help identify anomalous memory operations indicative of heap exploitation attempts. From a development standpoint, integrating static code analysis tools that detect CWE-787 patterns during the software development lifecycle is essential to prevent similar vulnerabilities in future releases.