CVE-2025-20964 is a medium-severity vulnerability classified as CWE-787 (Out-of-bounds Write) affecting Samsung Mobile Devices. The flaw exists in the libsavsvc.so library, which is responsible for parsing media files. Specifically, the vulnerability allows a local attacker to perform an out-of-bounds write operation in memory when processing crafted media files. This can lead to corruption of memory, potentially enabling the attacker to escalate privileges, execute arbitrary code, or cause denial of service conditions. The vulnerability requires local access (AV:L), low attack complexity (AC:L), no privileges (PR:N), but does require user interaction (UI:R), such as opening or interacting with a malicious media file. The scope is unchanged (S:U), meaning the impact is limited to the vulnerable component. The CVSS 3.1 base score is 6.6, reflecting a medium severity with limited confidentiality impact (C:L), but high integrity (I:H) and low availability (A:L) impacts. No known exploits are currently reported in the wild, and no patches have been linked yet, though the issue is addressed in Samsung Mobile's SMR May-2025 Release 1. This vulnerability is significant because media file parsing is a common operation on mobile devices, and exploitation could lead to privilege escalation or arbitrary code execution by a local attacker, potentially compromising device integrity and user data.

For European organizations, this vulnerability poses a risk primarily to employees and users utilizing Samsung Mobile Devices, which are widely used across Europe. If exploited, attackers with local access could compromise device integrity, leading to unauthorized modifications or execution of malicious code. This could result in leakage or corruption of sensitive corporate data accessed or stored on the device, disruption of mobile services, or use of compromised devices as entry points into corporate networks. The requirement for user interaction limits remote exploitation, but social engineering or malicious media files delivered via email or messaging apps could facilitate attacks. Organizations with Bring Your Own Device (BYOD) policies or those relying heavily on Samsung mobile hardware should be particularly vigilant. The medium severity suggests a moderate but non-trivial risk, especially in environments where local device security controls are weak or users are prone to opening untrusted media files.

Organizations should prioritize updating Samsung Mobile Devices to the SMR May-2025 Release 1 or later as soon as patches become available. Until then, they should implement strict mobile device management (MDM) policies that restrict installation and opening of untrusted media files, especially from unknown sources. User awareness training should emphasize the risks of opening unsolicited media files and encourage cautious behavior. Enforcing device encryption and strong authentication can limit the impact of local attacks. Additionally, monitoring for unusual device behavior or crashes related to media processing can help detect exploitation attempts. Enterprises should also consider restricting local access to devices, for example by disabling USB debugging or restricting physical access, to reduce the attack surface. Finally, maintaining up-to-date antivirus and endpoint protection solutions on mobile devices can help detect and block malicious payloads associated with exploitation attempts.