Critical Alert: Samsung Galaxy S24 Security Flaw Exposes Risk of Unauthorized File

Overview of the Vulnerability

A recently uncovered security flaw in the Samsung Galaxy S24 could let attackers within the same network create arbitrary files on the device. This vulnerability, identified as CVE-2024-49421 and disclosed on April 9, 2025, during the Pwn2Own competition, highlights significant risks in the device’s Quick Share feature.

Details of the Flaw

The issue, receiving a CVSS score of 5.9, stems from improper validation of user-supplied paths before their use in file operations. Identified by security researcher Ken Gannon from NCC Group, this directory traversal flaw could allow attackers to manipulate file operations through the Quick Share application, posing a medium-to-high severity threat.

• Affected Versions: Quick Share Agent versions prior to 3.5.14.47 on Android 12, 3.5.19.41 on Android 13, and 3.5.19.42 on Android 14.
• Impact: Potential for unauthorized file creation and system compromise.
• Attack Vector: Requires network proximity—an attacker needs to be on the same network as the targeted device.

Security Implications and Risks

The exploitation of this vulnerability could expose users to significant security threats especially in public spaces like cafes and airports, where attackers can easily access local networks.

Patch and Security Advisory

Responding to the threat, Samsung promptly released a patch as part of their December 2024 security update. Users are urged to install this update to protect their devices from potential attacks.

Security Recommendations

Users should regularly check for updates by navigating to Settings > Software Update > Download and Install on their Samsung Galaxy S24. It is also advisable to keep automatic updates enabled and to exercise caution when sharing files via Quick Share, especially on public networks.

Staying Informed

For continuous protection and security news updates, users should follow trusted sources on platforms like Google News, LinkedIn, and X.

Given the complexities and evolving nature of security threats, it is crucial for smartphone users to stay vigilant about updating their devices and understanding the potential vulnerabilities that could impact their personal and data security.

Related: 5 Alarming Facts About the New iNARi Loader Malware Targeting macOS Users

Last Updated: April 15, 2025