CVE-2026-30284: UXGROUP Voice Recorder RCE Vulnerability

CVE-2026-30284 Overview

An arbitrary file overwrite vulnerability has been identified in UXGROUP LLC Voice Recorder v10.0. This vulnerability allows attackers to overwrite critical internal files via the file import process, which can lead to arbitrary code execution or information exposure. The flaw is classified under CWE-73 (External Control of File Name or Path), indicating that the application improperly handles user-controlled file paths during the import functionality.

Critical Impact

Successful exploitation allows attackers to overwrite critical system files, potentially leading to arbitrary code execution or sensitive information exposure on affected devices.

Affected Products

• UXGROUP LLC Voice Recorder v10.0
• Voice Recorder application with vulnerable file import functionality
• Android/iOS devices running the affected Voice Recorder version

Discovery Timeline

• 2026-03-31 - CVE-2026-30284 published to NVD
• 2026-04-01 - Last updated in NVD database

Technical Details for CVE-2026-30284

Vulnerability Analysis

The vulnerability resides in the file import process of the Voice Recorder application. When a user imports audio files or related data, the application fails to properly validate and sanitize file paths provided as input. This allows an attacker to craft malicious input that escapes the intended directory structure and overwrites arbitrary files within the application's sandbox or accessible storage locations.

The local attack vector requires user interaction—specifically, the victim must import a maliciously crafted file. However, the scope is changed (S:C in the CVSS vector), meaning the vulnerable component impacts resources beyond its security scope, affecting the confidentiality and integrity of other system components.

Root Cause

The root cause of this vulnerability is CWE-73: External Control of File Name or Path. The application accepts external input to construct file paths without adequate validation or sanitization. This allows path traversal sequences (such as ../) or absolute paths to be injected, enabling writes to locations outside the intended import directory.

The application's file handling routines do not implement proper canonicalization or bounds checking before writing imported data to disk, creating an opportunity for attackers to manipulate the destination path.

Attack Vector

The attack requires local access and user interaction. An attacker must convince a victim to import a specially crafted file into the Voice Recorder application. The malicious file contains path manipulation sequences that exploit the vulnerable import functionality.

When the victim imports the malicious file, the application processes the embedded path without validation, resulting in critical internal files being overwritten. Depending on the target files, this can lead to code execution (by overwriting executable files or configuration that references executables) or information disclosure (by overwriting files that control data access or logging).

The vulnerability mechanism can be understood as follows: the import handler reads the destination filename from user-controlled input, constructs a file path by concatenating the application's data directory with the user-supplied filename, and writes the imported content to that location. Without proper path validation, directory traversal sequences allow escape from the intended directory, enabling arbitrary file overwrites within the application's permissions scope.

Detection Methods for CVE-2026-30284

Indicators of Compromise

• Unexpected modifications to application configuration files within the Voice Recorder data directory
• Presence of audio files or application data in non-standard locations
• Application crashes or unexpected behavior following file import operations
• Modified timestamps on critical application files that don't correlate with legitimate updates

Detection Strategies

• Monitor file system activity for write operations outside the Voice Recorder application's expected directories during import operations
• Implement file integrity monitoring for critical application files and system configurations
• Review application logs for failed or suspicious file import attempts with unusual path patterns
• Configure endpoint detection rules to alert on path traversal patterns in file operations

Monitoring Recommendations

• Enable enhanced logging for file system operations on mobile devices running the vulnerable application
• Monitor for anomalous application behavior patterns that may indicate successful exploitation
• Implement application-level sandboxing to detect and prevent unauthorized file access attempts

How to Mitigate CVE-2026-30284

Immediate Actions Required

• Remove or disable the UXGROUP LLC Voice Recorder v10.0 application until a patched version is available
• Avoid importing files from untrusted sources into the Voice Recorder application
• Review any recently imported files and check for unexpected changes to system or application files
• Consider using alternative voice recording applications that implement proper input validation

Patch Information

As of the last NVD update on 2026-04-01, no official vendor patch has been announced. Users should monitor the vendor's official channels and the GitHub Issue #25 for updates regarding security fixes. Additional information may be available through AppCraze or SecSys Fudan University who documented this vulnerability.

Workarounds

• Disable or restrict the file import functionality within the application if possible
• Only import files from verified and trusted sources
• Implement device-level file access controls to limit the application's write permissions
• Use mobile device management (MDM) solutions to restrict application capabilities on enterprise devices

# Android ADB command to restrict app permissions (if applicable)
adb shell pm revoke com.uxgroup.voicerecorder android.permission.WRITE_EXTERNAL_STORAGE
adb shell pm revoke com.uxgroup.voicerecorder android.permission.MANAGE_EXTERNAL_STORAGE