CVE-2023-34641 in KioWare
Summary
by MITRE • 06/19/2023
KioWare for Windows through v8.33 was discovered to contain an incomplete blacklist filter for blocked dialog boxes on Windows 10. This issue can allow attackers to open a file dialog box via the function window.print() which can then be used to open an unprivileged command prompt.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 01/08/2026
The vulnerability identified as CVE-2023-34641 affects KioWare for Windows versions through v8.33 and represents a critical security flaw in the application's dialog box filtering mechanism. This issue stems from an incomplete blacklist implementation that fails to properly restrict access to certain Windows dialog boxes, specifically those related to file operations. The vulnerability exists within the application's security model for Windows 10 environments where KioWare operates as a kiosk or lock-down solution. Security researchers discovered that this flaw allows unauthorized access to system functionality that should normally be restricted in kiosk environments.
The technical exploitation of this vulnerability occurs through the window.print() function which is typically used for printing web content but can be manipulated to trigger file dialog boxes. When attackers leverage this functionality, they can bypass the intended security boundaries of KioWare and access file selection dialogs that should remain blocked. These dialog boxes can then be used to navigate to system executables or scripts that can launch unprivileged command prompts. The underlying flaw lies in the insufficient validation of dialog box types that are permitted to execute through the print function, creating an unexpected code execution pathway.
The operational impact of this vulnerability is significant for organizations that rely on KioWare for Windows as their primary kiosk solution. Attackers who successfully exploit this vulnerability can gain access to command prompt functionality without proper authentication, potentially allowing them to execute arbitrary commands, access system files, or escalate privileges within the constrained environment. The vulnerability undermines the fundamental security premise of kiosk solutions which are designed to prevent users from accessing system-level functionality. This weakness could enable attackers to perform actions such as launching malware, accessing sensitive data, or modifying system configurations that should remain protected.
Organizations utilizing affected versions of KioWare for Windows should immediately implement mitigations including updating to the latest version where this vulnerability has been patched. The fix typically involves strengthening the dialog box filtering mechanism to properly validate and restrict all dialog box types that can be triggered through web functions. Security teams should also consider implementing additional network-level controls and monitoring for suspicious print function usage. This vulnerability aligns with CWE-284 which addresses improper access control in software applications, and maps to ATT&CK technique T1059 which covers command and scripting interpreter usage. Organizations should conduct thorough security assessments of their kiosk deployments and ensure proper patch management procedures are in place to prevent exploitation of similar incomplete blacklist vulnerabilities.