CVE-2025-64294 is a vulnerability identified in the d3wp WP Snow Effect WordPress plugin, affecting all versions up to 1.1.15. The core issue is a missing authorization control (CWE-862), meaning that certain functionalities within the plugin can be accessed without proper verification of user permissions. This flaw allows unauthenticated attackers to invoke plugin functions that should be restricted, potentially leading to unauthorized modifications of plugin settings or behavior. The vulnerability has a CVSS 3.1 base score of 5.3, reflecting a medium severity level. The vector indicates that the attack can be performed remotely (AV:N), requires no privileges (PR:N), and no user interaction (UI:N), but impacts only integrity (I:L) without affecting confidentiality or availability. Since the plugin is designed to add visual snow effects to WordPress sites, unauthorized changes could disrupt site appearance or introduce unexpected behaviors, which might be leveraged for further attacks or defacement. No patches or exploit code are currently available, and no active exploitation has been reported. The vulnerability was published on November 3, 2025, with the initial reservation on October 29, 2025. The lack of proper ACL enforcement suggests a design oversight in the plugin's access control implementation, which developers should address in future updates.

For European organizations, the impact of CVE-2025-64294 primarily concerns the integrity of WordPress sites using the WP Snow Effect plugin. Unauthorized access to plugin functions could allow attackers to alter site visuals or plugin configurations, potentially damaging brand reputation or user trust. While the vulnerability does not directly expose sensitive data or cause denial of service, integrity compromises can be a stepping stone for further attacks, such as injecting malicious scripts or misleading site visitors. Small and medium enterprises (SMEs) and e-commerce sites relying on WordPress with this plugin are particularly at risk, as they may lack dedicated security teams to detect subtle unauthorized changes. Additionally, organizations in sectors with strict compliance requirements (e.g., finance, healthcare) could face regulatory scrutiny if unauthorized modifications lead to data integrity issues or customer impact. The absence of known exploits reduces immediate risk but also means organizations should proactively monitor and prepare for potential exploitation attempts. The vulnerability's remote and unauthenticated nature increases its attractiveness to opportunistic attackers targeting vulnerable WordPress installations across Europe.

1. Immediately audit all WordPress sites for the presence of the WP Snow Effect plugin and identify versions in use. 2. Restrict administrative access to WordPress dashboards and plugin management interfaces using strong authentication methods, such as multi-factor authentication (MFA). 3. Implement web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the plugin's endpoints or functionalities. 4. Monitor site integrity and plugin configuration changes through file integrity monitoring tools and WordPress activity logs to quickly detect unauthorized modifications. 5. Engage with the plugin vendor or community to obtain or request a security patch addressing the missing authorization controls. 6. Until a patch is available, consider disabling or uninstalling the WP Snow Effect plugin on critical systems to eliminate exposure. 7. Educate site administrators about the risks of unauthorized plugin access and encourage regular updates of all WordPress components. 8. Use network segmentation and least privilege principles to limit exposure of WordPress servers to untrusted networks.