CVE-2025-3701 is a Missing Authorization vulnerability (CWE-862) found in the Malcure Web Security Malcure Malware Scanner product. This vulnerability arises due to incorrectly configured access control security levels, allowing users with limited privileges to perform actions or access resources that should be restricted. The affected versions include all versions up to 16.8, though the exact starting version is unspecified (noted as 'n/a'). The vulnerability has a CVSS v3.1 base score of 4.3, indicating a medium severity level. The CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N) shows that the attack can be performed remotely over the network with low attack complexity, requires privileges (PR:L) but no user interaction, and impacts integrity but not confidentiality or availability. Specifically, the flaw allows an attacker with some level of authenticated access to bypass authorization controls and potentially modify or manipulate data or system state within the Malcure Malware Scanner environment. No public exploits are known to be in the wild at this time, and no patches or fixes have been linked yet. The vulnerability was reserved in April 2025 and published in September 2025. Given the nature of the vulnerability, it primarily affects the integrity of the system by enabling unauthorized changes, which could undermine the reliability of malware scanning results or system configurations, potentially leading to further exploitation or evasion of security controls.

For European organizations, the impact of CVE-2025-3701 depends on their deployment of the Malcure Malware Scanner. Organizations relying on this product for web security and malware detection could face risks of unauthorized modification of scan results or configurations, which may lead to undetected malware infections or compromised system integrity. This could have downstream effects on compliance with European data protection regulations such as GDPR, especially if malware infections lead to data breaches. The vulnerability requires authenticated access with low privileges, so insider threats or compromised user accounts could be leveraged to exploit this flaw. The medium severity score suggests a moderate risk, but in critical infrastructure sectors or organizations with high security requirements, even this level of vulnerability could have significant operational and reputational consequences. Additionally, the lack of available patches increases the window of exposure. European organizations in sectors such as finance, healthcare, and government, which often use specialized security scanning tools, may be particularly sensitive to this vulnerability.

To mitigate this vulnerability, European organizations should first audit and review access control configurations within the Malcure Malware Scanner to ensure that privilege levels are correctly enforced and that no users have excessive permissions. Implement strict role-based access control (RBAC) policies and monitor user activities for suspicious behavior. Until an official patch is released, consider restricting access to the Malcure Malware Scanner interface to trusted networks and users only, possibly through network segmentation or VPNs. Employ multi-factor authentication (MFA) for all users with access to the scanner to reduce the risk of compromised credentials being used to exploit the vulnerability. Regularly review logs and alerts for anomalous changes or unauthorized actions within the scanner. If possible, temporarily limit the use of the affected product or replace it with alternative malware scanning solutions that do not have this vulnerability. Stay informed on vendor updates and apply patches promptly once available.