CVE-2025-68924 is a vulnerability identified in Umbraco Forms, a popular .NET-based content management system plugin used for creating and managing forms. The vulnerability exists in versions through 8.13.16 and is categorized under CWE-829, which involves the inclusion of functionality from an untrusted control sphere. Specifically, an authenticated attacker can supply a malicious WSDL (Web Services Description Language) URL as a data source within Umbraco Forms. This malicious input is processed by the system, allowing the attacker to execute arbitrary code remotely on the server hosting the Umbraco instance. The attack does not require user interaction but does require the attacker to have at least low-level authenticated access to the application. The CVSS v3.1 score of 7.5 reflects a high severity, with network attack vector (AV:N), high attack complexity (AC:H), low privileges required (PR:L), no user interaction (UI:N), unchanged scope (S:U), and high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). The vulnerability arises because the application trusts and processes external WSDL URLs without sufficient validation or sandboxing, allowing malicious payloads to be executed within the server context. No public exploits are known at this time, but the potential for remote code execution makes this a critical concern for organizations using affected versions of Umbraco Forms. The lack of available patches at the time of publication necessitates immediate risk mitigation strategies.

The impact of CVE-2025-68924 on European organizations is significant. Successful exploitation leads to remote code execution, allowing attackers to fully compromise the affected server, potentially leading to data breaches, service disruption, and lateral movement within the network. Confidentiality is at high risk as attackers can access sensitive data processed or stored by the CMS. Integrity is compromised as attackers can alter form data, configurations, or inject malicious content. Availability is also threatened due to possible denial-of-service conditions or destruction of data. European organizations relying on Umbraco Forms for customer-facing websites, internal portals, or data collection are vulnerable to reputational damage, regulatory penalties (e.g., GDPR violations), and operational disruptions. The requirement for authenticated access somewhat limits the attack surface but does not eliminate risk, especially in environments with weak access controls or compromised user credentials. The vulnerability is particularly critical for sectors such as finance, healthcare, government, and e-commerce, where data sensitivity and service continuity are paramount.

To mitigate CVE-2025-68924, organizations should implement the following specific measures: 1) Monitor Umbraco’s official channels for patches and apply updates immediately once available. 2) Restrict permissions for users who can configure data sources in Umbraco Forms, limiting this capability to trusted administrators only. 3) Implement strict validation and whitelisting of external data sources, disallowing arbitrary WSDL URLs or enforcing internal-only endpoints. 4) Employ network segmentation and firewall rules to limit outbound connections from the CMS server to only trusted services. 5) Conduct regular audits of user accounts and access logs to detect suspicious authenticated activity. 6) Use application-level security controls such as Web Application Firewalls (WAFs) configured to detect and block anomalous SOAP or WSDL requests. 7) Harden the underlying server environment by disabling unnecessary services and applying principle of least privilege to all processes. 8) Educate administrators about the risks of accepting untrusted external data sources and enforce secure configuration policies. These targeted actions go beyond generic patching advice and address the root cause and exploitation vectors of this vulnerability.