CVE-2025-58478 is an out-of-bounds write vulnerability classified under CWE-787 found in the libimagecodec.quram.so library used by Samsung Mobile devices. This vulnerability exists in versions prior to the SMR (Security Maintenance Release) December 2025 Release 1. The flaw allows remote attackers to cause out-of-bounds memory writes by supplying crafted input that is processed by the vulnerable image codec library. Such out-of-bounds writes can corrupt memory, potentially leading to integrity violations such as data manipulation or application crashes. The vulnerability is exploitable remotely over the network without requiring privileges or authentication, but it does require user interaction, for example, opening a malicious image file or receiving a crafted multimedia message. The CVSS v3.1 score of 4.3 reflects a medium severity, with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), user interaction required (UI:R), unchanged scope (S:U), no confidentiality impact (C:N), low integrity impact (I:L), and no availability impact (A:N). No public exploits are known at this time, and no patches have been linked yet, but Samsung is expected to address this in their December 2025 security update. The vulnerability specifically affects Samsung Mobile devices, which are widely used globally, including in Europe. The flaw resides in a core multimedia processing library, making it a potential target for attackers aiming to compromise device integrity or execute further attacks via memory corruption.

For European organizations, this vulnerability poses a moderate risk primarily to the integrity of Samsung Mobile devices used within their infrastructure or by employees. Successful exploitation could allow attackers to manipulate memory contents, potentially enabling code execution or application crashes, which could disrupt business operations or facilitate further compromise. Although confidentiality and availability impacts are not directly indicated, integrity violations can lead to data tampering or unauthorized actions on affected devices. Given the widespread use of Samsung Mobile devices in Europe, especially in corporate and governmental sectors, exploitation could affect sensitive communications and mobile workflows. The requirement for user interaction limits large-scale automated exploitation but targeted phishing or social engineering attacks could be effective. The absence of known exploits currently reduces immediate risk, but the vulnerability should be treated proactively to prevent future attacks. Organizations relying heavily on Samsung mobile technology for critical communications or data access are particularly at risk.

1. Monitor Samsung’s official security advisories and apply the SMR December 2025 Release 1 update promptly once available to remediate the vulnerability. 2. Until patches are deployed, restrict or monitor the handling of untrusted multimedia content, especially images, on Samsung devices to reduce exposure to crafted malicious files. 3. Educate users on the risks of opening unsolicited or suspicious multimedia messages or files to minimize user interaction exploitation vectors. 4. Employ mobile device management (MDM) solutions to enforce security policies, control app installations, and restrict potentially vulnerable functionalities. 5. Implement network-level protections such as filtering or sandboxing of multimedia content before delivery to devices. 6. Conduct regular security assessments and monitoring for anomalous behavior indicative of exploitation attempts targeting the image codec library. 7. Coordinate with Samsung support channels for early access to patches or mitigation guidance if available. 8. Consider deploying endpoint detection and response (EDR) tools capable of identifying memory corruption or exploitation attempts on mobile devices.