CVE-2026-64197 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 data structure. 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.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 09/04/2026
The vulnerability identified as an out-of-bounds write in DASYLab represents a critical memory corruption flaw stemming from insufficient validation of external inputs, specifically within the processing logic for .DSB files. This type of defect is 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 or data structure. In this specific instance, the application fails to adequately verify the size and integrity of user-supplied data contained within the .DSB file format before attempting to write it into internal structures. This lack of rigorous bounds checking allows maliciously crafted input to overwrite adjacent memory regions that are not intended for modification by the current operation.
The operational impact of this vulnerability is severe, as out-of-bounds writes can lead to arbitrary code execution with the privileges of the affected application. By carefully crafting a .DSB file where specific fields exceed expected limits or contain malformed data structures, an attacker can manipulate the program's control flow. This may involve overwriting function pointers, return addresses, or other critical metadata stored in memory adjacent to the target buffer. Such manipulation enables the execution of arbitrary shellcode injected by the attacker, effectively granting full control over the compromised system. The requirement for a user to open the specially crafted file indicates that this is primarily an attack vector relying on social engineering or phishing tactics rather than remote network exploitation without interaction.
From a threat intelligence perspective, this vulnerability aligns with ATT&CK technique T1203: Exploitation for Client Execution, where attackers exploit vulnerabilities in client software to execute malicious code. The reliance on the user opening a file places this within the context of initial access and execution phases of an attack lifecycle. Organizations utilizing DASYLab for data acquisition and analysis must recognize that even trusted-looking files can serve as delivery mechanisms for exploits if they originate from untrusted sources or have been tampered with during transit.
Mitigation strategies should prioritize immediate patching to version 2026.0.0 or later, where the vendor has presumably implemented proper input validation and bounds checking routines. Until patches are applied, users must exercise extreme caution when opening .DSB files from unknown or unverified origins. Implementing application whitelisting policies can also help restrict the execution of unauthorized binaries that might be dropped by such exploits. Furthermore, network segmentation and endpoint detection and response solutions should be configured to monitor for anomalous memory access patterns or unexpected process executions following file openings in DASYLab environments. Regular security awareness training regarding phishing vectors remains essential given the user-interaction requirement inherent in this vulnerability class.