CVE-2025-58479 is a medium severity vulnerability classified under CWE-125 (Out-of-bounds Read) affecting Samsung Mobile devices. The flaw exists in the libimagecodec.quram.so library, a component responsible for image codec operations. Prior to the SMR December 2025 Release 1 update, this library improperly handles memory boundaries, allowing remote attackers to cause out-of-bounds reads. This can lead to unauthorized disclosure of memory contents, potentially leaking sensitive data stored in adjacent memory regions. The attack vector is remote network access with no privileges required, but user interaction is necessary to trigger the vulnerability, likely through crafted image files or media content. The vulnerability does not impact system integrity or availability, limiting its scope to confidentiality breaches. No public exploits have been reported yet, but the presence of this flaw in widely used Samsung Mobile devices makes it a concern for users and organizations relying on these devices. The vulnerability was reserved in early September 2025 and published in December 2025, indicating recent discovery and disclosure. The lack of patch links suggests that users should await official updates or apply the SMR December 2025 Release 1 when available to remediate the issue.

For European organizations, the primary impact of CVE-2025-58479 is the potential leakage of sensitive information from Samsung Mobile devices. This could include personal data, credentials, or proprietary information stored in memory adjacent to the vulnerable component. While the vulnerability does not allow code execution or system disruption, the confidentiality breach could facilitate further attacks such as social engineering or targeted phishing. Organizations with employees using Samsung Mobile devices for work-related communications or data access are at risk of data exposure. The requirement for user interaction means that phishing or malicious media delivery vectors are likely, emphasizing the need for user awareness. The medium severity rating reflects a moderate risk, but the widespread use of Samsung devices in Europe, especially in sectors like finance, government, and telecommunications, elevates the importance of timely mitigation. Failure to address this vulnerability could undermine data protection compliance obligations under GDPR if sensitive personal data is exposed.

European organizations should implement a multi-layered mitigation approach. First, ensure all Samsung Mobile devices are updated promptly with the SMR December 2025 Release 1 or later, which addresses this vulnerability. Until patches are applied, restrict the opening of untrusted or unsolicited media files, especially images, received via email, messaging apps, or web downloads. Deploy mobile device management (MDM) solutions to enforce update policies and control application permissions that could trigger the vulnerability. Educate users about the risks of interacting with suspicious content and encourage reporting of unusual device behavior. Network-level protections such as email filtering and anti-malware gateways can reduce the likelihood of malicious content delivery. Additionally, monitor device logs and network traffic for anomalies that could indicate exploitation attempts. Organizations should coordinate with Samsung support channels for timely vulnerability information and patch availability. Finally, review and update incident response plans to include scenarios involving mobile device data leakage.