CVE-2025-58477 is an out-of-bounds write vulnerability classified under CWE-787 found in the libimagecodec.quram.so library used by Samsung Mobile devices. The flaw occurs during the parsing of Image File Directory (IFD) tags, which are part of image metadata structures. Specifically, the vulnerability allows remote attackers to write data beyond the allocated memory buffer boundaries when processing crafted image files. This can lead to memory corruption, potentially altering program behavior or causing crashes. The vulnerability does not directly compromise confidentiality or availability but impacts integrity by enabling unauthorized memory modification. Exploitation requires no privileges and no authentication but does require user interaction, such as opening or previewing a maliciously crafted image file. The vulnerability affects devices prior to the Samsung Mobile Security Release (SMR) December 2025 Release 1, with no patches publicly available at the time of disclosure. No known exploits have been reported in the wild, indicating limited active exploitation. The CVSS v3.1 base score is 4.3, reflecting a medium severity level due to the ease of remote exploitation balanced against limited impact scope. The vulnerability highlights the risks associated with image parsing libraries and the importance of robust input validation in mobile device firmware components.

For European organizations, this vulnerability poses a moderate risk primarily to mobile device integrity. Samsung Mobile devices are widely used across Europe in both consumer and enterprise environments, including sectors reliant on mobile communications such as finance, healthcare, and government. Successful exploitation could allow attackers to corrupt memory, potentially leading to application crashes or unexpected behavior that might be leveraged in targeted attacks or to bypass security controls. While no direct confidentiality or availability impact is indicated, integrity compromises could facilitate further exploitation chains or data manipulation. The requirement for user interaction limits mass exploitation but does not eliminate risk from phishing or social engineering campaigns delivering malicious images. Organizations with mobile device management (MDM) systems controlling Samsung devices may face operational challenges if devices become unstable or compromised. The lack of current patches necessitates heightened vigilance until updates are deployed.

European organizations should prioritize the following mitigations: 1) Monitor Samsung’s official security advisories and apply the SMR December 2025 Release 1 update or later as soon as it becomes available to remediate the vulnerability. 2) Implement strict controls on image file sources, restricting or scanning images received via email, messaging apps, or downloads to detect potentially malicious content. 3) Educate users about the risks of opening untrusted image files, emphasizing caution with unsolicited images or those from unknown sources. 4) Utilize mobile device management (MDM) solutions to enforce security policies, including restricting installation of apps that can process images from unverified sources. 5) Employ endpoint detection and response (EDR) tools capable of identifying anomalous application crashes or memory corruption events on mobile devices. 6) Consider network-level protections such as sandboxing or content disarm and reconstruction (CDR) for image files entering corporate environments. These targeted actions go beyond generic advice by focusing on controlling the attack vector (malicious images) and ensuring timely patch deployment.