CVE-2025-61810 is a deserialization of untrusted data vulnerability (CWE-502) affecting multiple versions of Adobe ColdFusion, specifically versions 2025.4, 2023.16, 2021.22, and earlier. This vulnerability arises when the application deserializes data without proper validation, allowing an attacker with high privileges to craft malicious serialized objects that, when processed, lead to arbitrary code execution within the context of the current user. The vulnerability requires user interaction, such as an authenticated user triggering the deserialization process, and the scope of the attack changes, meaning the attacker can potentially escalate privileges or affect other components beyond the initial application context. The CVSS 3.1 base score is 8.4, reflecting a network attack vector with low complexity, requiring high privileges and user interaction, but causing high impact on confidentiality, integrity, and availability. Although no known exploits are currently reported in the wild, the vulnerability poses a significant risk due to the widespread use of ColdFusion in enterprise web applications and the potential for severe consequences if exploited. The lack of available patches at the time of publication necessitates immediate risk mitigation through configuration and access controls. Deserialization vulnerabilities are particularly dangerous because they can bypass many traditional security controls and lead to full system compromise if exploited successfully.

For European organizations, exploitation of CVE-2025-61810 could lead to unauthorized code execution on critical web servers running Adobe ColdFusion, resulting in data breaches, service disruptions, and potential lateral movement within networks. Given ColdFusion's use in various government, financial, and industrial sectors across Europe, a successful attack could compromise sensitive personal data protected under GDPR, disrupt essential services, and damage organizational reputation. The requirement for high privileges and user interaction somewhat limits the attack surface but does not eliminate risk, especially in environments where privileged users have broad access or where social engineering could facilitate interaction. The scope change aspect means attackers could escalate privileges or affect other systems, increasing the potential impact. The absence of known exploits currently provides a window for proactive defense, but the high CVSS score indicates that once exploits emerge, rapid exploitation could occur. Consequently, European entities must prioritize vulnerability management to avoid compliance violations and operational risks.

1. Monitor Adobe’s official channels for patches addressing CVE-2025-61810 and apply them immediately upon release. 2. Restrict access to ColdFusion serialization endpoints to trusted users and networks only, using network segmentation and firewall rules. 3. Implement strict input validation and sanitization on all data that is deserialized to prevent malicious payloads. 4. Enforce the principle of least privilege for all ColdFusion users, minimizing the number of high-privileged accounts and their access scope. 5. Employ application-layer security controls such as Web Application Firewalls (WAFs) configured to detect and block suspicious serialized data patterns. 6. Conduct user awareness training to reduce the risk of social engineering that could lead to the required user interaction for exploitation. 7. Regularly audit and monitor ColdFusion logs for unusual deserialization activities or errors that could indicate attempted exploitation. 8. Consider disabling or limiting deserialization features if not essential to application functionality. These steps go beyond generic advice by focusing on access control, monitoring, and user behavior to mitigate risk until patches are available.