CVE-2025-21077 is a vulnerability classified under CWE-20 (Improper Input Validation) found in Samsung Email versions prior to 6.2.06.0. The flaw arises because the application does not properly validate input data, allowing a local attacker with limited privileges (PR:L) to launch arbitrary activities within the context of the Samsung Email app. The attack vector is local (AV:L), meaning the attacker must have physical or logical access to the device. No user interaction is required (UI:N), and the scope remains unchanged (S:U), indicating the vulnerability does not affect other components beyond the app itself. The CVSS v3.1 base score is 3.3, reflecting a low severity due to limited impact on confidentiality (C:L), no impact on integrity (I:N) or availability (A:N). Exploitation could enable an attacker to perform unauthorized actions within the Samsung Email app's privilege boundary, potentially leading to minor information disclosure or unauthorized activity launches. However, the absence of known exploits in the wild and the requirement for local access limit the threat's immediacy. No official patch links are currently available, but upgrading to Samsung Email version 6.2.06.0 or later is expected to remediate the issue. This vulnerability highlights the importance of robust input validation in mobile applications to prevent privilege escalation or unauthorized activity execution.

For European organizations, the impact of CVE-2025-21077 is generally low but not negligible. Since the vulnerability requires local access and only affects the Samsung Email app's privileges, it does not pose a direct threat to enterprise-wide confidentiality, integrity, or availability. However, in environments where Samsung mobile devices are widely used for corporate email and communication, an attacker with physical or logical access to a device could exploit this flaw to launch unauthorized activities within the email app. This could lead to minor information disclosure or manipulation of email-related functions, potentially aiding further attacks such as phishing or social engineering. The risk is higher in scenarios where devices are shared, lost, or insufficiently secured. Additionally, organizations with Bring Your Own Device (BYOD) policies may face increased exposure if vulnerable Samsung Email versions are in use. Overall, while the vulnerability does not enable remote exploitation or widespread compromise, it underscores the need for strict device access controls and timely patch management in mobile environments.

1. Update Samsung Email to version 6.2.06.0 or later as soon as the patch becomes available to ensure the vulnerability is remediated. 2. Enforce strict local device access controls, including strong authentication mechanisms (PIN, biometrics) to prevent unauthorized physical or logical access. 3. Implement mobile device management (MDM) solutions to monitor and control app versions and enforce security policies on corporate and BYOD devices. 4. Educate users on the risks of leaving devices unattended and the importance of applying updates promptly. 5. Restrict installation of untrusted applications and limit device rooting or jailbreaking, which could facilitate local exploitation. 6. Regularly audit devices for compliance with security policies and presence of vulnerable app versions. 7. Consider disabling or restricting Samsung Email usage on devices where alternative secure email clients are available and feasible. 8. Monitor for unusual activity within email applications that could indicate exploitation attempts.