CVE-2025-64897 is a vulnerability classified under CWE-284 (Improper Access Control) affecting Adobe ColdFusion versions 2025.4, 2023.16, 2021.22, and earlier. The flaw allows a low-privileged attacker to bypass intended access restrictions and gain unauthorized write access to certain components or data within the ColdFusion environment. This unauthorized write capability can be leveraged to disrupt service availability, potentially resulting in denial of service conditions. The attack vector requires user interaction, implying that the attacker must trick a user into performing an action such as clicking a malicious link or opening a crafted file that triggers the exploit. The CVSS v3.1 base score is 5.6, reflecting a medium severity level, with the vector indicating local attack complexity (AV:L), low attack complexity (AC:L), low privileges required (PR:L), user interaction required (UI:R), unchanged scope (S:U), no confidentiality impact (C:N), limited integrity impact (I:L), and high availability impact (A:H). No known exploits have been reported in the wild, and no official patches have been linked yet, though Adobe is expected to release updates. The vulnerability stems from insufficient enforcement of access controls within ColdFusion, allowing unauthorized write operations that could be used to alter configurations, inject malicious code, or corrupt data, thereby disrupting normal operations. Organizations relying on ColdFusion for web application hosting or backend services should be aware of this risk and prepare to apply patches promptly once available.

For European organizations, the impact of CVE-2025-64897 can be significant, especially for those using Adobe ColdFusion in critical business applications, government services, or infrastructure. The unauthorized write access can lead to denial of service, disrupting availability of web applications and services, which could affect business continuity and customer trust. Although confidentiality is not directly impacted, the integrity of application data and configurations can be compromised, potentially leading to further exploitation or persistent disruptions. The requirement for user interaction reduces the likelihood of widespread automated exploitation but does not eliminate risk, particularly in environments with many users or where social engineering is effective. Industries such as finance, healthcare, public administration, and manufacturing in Europe that rely on ColdFusion-based applications may face operational disruptions and reputational damage. Additionally, the lack of patches at the time of disclosure means organizations must rely on interim mitigations, increasing exposure until updates are applied.

1. Monitor Adobe’s official channels closely for the release of security patches addressing CVE-2025-64897 and apply them immediately upon availability. 2. Restrict user privileges on systems running ColdFusion to the minimum necessary, reducing the potential impact of a low-privileged attacker. 3. Implement strict access controls and audit logging within ColdFusion environments to detect unauthorized write attempts or suspicious activities. 4. Educate users about the risks of social engineering and the importance of not interacting with suspicious links or files, as exploitation requires user interaction. 5. Employ network segmentation to isolate ColdFusion servers from less trusted network zones, limiting exposure. 6. Use application-layer firewalls or web application firewalls (WAFs) with rules tailored to detect anomalous requests targeting ColdFusion write functionalities. 7. Regularly back up ColdFusion configurations and data to enable rapid recovery in case of denial of service or data corruption. 8. Conduct internal penetration testing focusing on access control weaknesses in ColdFusion deployments to identify and remediate potential exploitation paths before attackers do.