CVE-2025-20954 is a medium-severity vulnerability identified in Samsung Mobile Devices related to the use of implicit intents for sensitive communication within the EnrichedCall feature prior to the SMR May-2025 Release 1 update. The vulnerability is classified under CWE-927, which concerns the use of implicit intent for sensitive communication. Implicit intents in Android allow components to request actions without specifying the target component explicitly, which can lead to unintended information disclosure if sensitive data is passed without proper restrictions. In this case, local attackers with physical or local access to the device can exploit this vulnerability to access sensitive information transmitted via implicit intents. The attack requires user interaction to trigger, which means the victim must perform some action, such as clicking a link or opening a crafted message, to initiate the exploit. The CVSS v3.1 base score is 5.5, indicating a medium severity level, with the vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N. This means the attack requires local access, low attack complexity, no privileges, user interaction, and impacts confidentiality with high impact but does not affect integrity or availability. No known exploits are currently reported in the wild, and no patch links are provided yet, suggesting that mitigation may rely on upcoming security updates or configuration changes. The vulnerability affects Samsung Mobile Devices broadly, but specific affected versions are not detailed. The issue arises from the design of the EnrichedCall feature, which is used for enhanced calling capabilities, potentially involving sensitive communication data such as call metadata or user information.

For European organizations, the impact of this vulnerability could be significant, especially for enterprises and government entities that rely on Samsung Mobile Devices for secure communications. The confidentiality breach risk means sensitive call-related information could be exposed to local attackers, potentially leading to privacy violations, leakage of confidential business communications, or exposure of personally identifiable information (PII). Since user interaction is required, the risk is somewhat mitigated by the need for social engineering or user error, but targeted attacks against employees or officials remain plausible. The vulnerability does not affect integrity or availability, so operational disruption is unlikely. However, the exposure of sensitive data could have regulatory implications under GDPR and other privacy laws in Europe, leading to compliance risks and potential fines. The lack of known exploits in the wild reduces immediate threat levels but does not eliminate the risk of future exploitation once the vulnerability becomes widely known. Organizations using Samsung Mobile Devices should consider the sensitivity of the data handled via EnrichedCall and the likelihood of local attackers gaining physical or local access to devices.

To mitigate this vulnerability, European organizations should: 1) Prioritize applying the SMR May-2025 Release 1 update or any subsequent security patches from Samsung as soon as they become available to address the implicit intent handling issue. 2) Implement strict device access controls to prevent unauthorized local access, including strong lock screen policies, biometric authentication, and device encryption to reduce the risk of local attackers exploiting the vulnerability. 3) Educate users about the risks of interacting with unsolicited or suspicious content that could trigger the vulnerability, emphasizing cautious behavior regarding links, messages, or prompts related to calling features. 4) Monitor device usage and audit logs for unusual activity that may indicate attempts to exploit the vulnerability. 5) Where possible, disable or restrict the use of EnrichedCall features on devices used in high-security environments until patches are applied. 6) Collaborate with Samsung support channels to obtain timely updates and guidance specific to organizational deployments. These steps go beyond generic advice by focusing on patch management, user behavior, and device access controls tailored to the nature of this vulnerability.