CVE-2025-2747 is a critical vulnerability classified under CWE-288 (Authentication Bypass Using an Alternate Path or Channel) found in Kentico Xperience, a widely used content management and digital experience platform. The vulnerability arises from improper password handling in the Staging Sync Server component when the server is configured with the 'None' password type. This misconfiguration or design flaw allows an attacker to bypass authentication controls entirely, gaining unauthorized administrative access without needing valid credentials, privileges, or user interaction. The vulnerability affects all versions through 13.0.178. Once exploited, an attacker can manipulate administrative objects, potentially altering content, configurations, or deploying malicious code, severely compromising the confidentiality, integrity, and availability of the affected systems. The CVSS v3.1 base score is 9.8, reflecting the network attack vector, low attack complexity, no privileges required, no user interaction, and full impact on confidentiality, integrity, and availability. Although no known exploits are currently in the wild, the vulnerability's nature and severity make it a prime target for attackers. The lack of available patches at the time of disclosure increases the urgency for organizations to implement interim mitigations and closely monitor their environments for suspicious activity related to the Staging Sync Server component.

For European organizations, this vulnerability poses a significant risk due to the potential for complete administrative takeover of Kentico Xperience instances. Such control could lead to unauthorized data disclosure, content manipulation, service disruption, and the deployment of further malicious payloads within enterprise environments. Organizations relying on Kentico for managing websites, intranets, or digital customer experiences face risks to their brand reputation, regulatory compliance (including GDPR), and operational continuity. The ease of exploitation without authentication or user interaction increases the likelihood of automated attacks or wormable scenarios. Critical sectors such as finance, healthcare, government, and e-commerce in Europe, which often use Kentico for digital services, could experience severe operational and data security impacts. Additionally, the vulnerability could be leveraged as a foothold for lateral movement within networks, escalating the overall threat landscape for affected entities.

1. Immediately audit and identify all Kentico Xperience instances, focusing on versions through 13.0.178. 2. Disable the Staging Sync Server component if it is not essential to operations, as this is the vulnerable attack surface. 3. If the component must remain active, restrict network access to it using firewalls or network segmentation, allowing only trusted management hosts. 4. Monitor logs and network traffic for unusual or unauthorized access attempts targeting the Staging Sync Server endpoints. 5. Implement strict access controls and multi-factor authentication on administrative interfaces outside of the vulnerable component. 6. Engage with Kentico support or official channels to obtain patches or updates as soon as they are released. 7. Prepare incident response plans specifically addressing potential exploitation scenarios involving administrative takeover. 8. Conduct internal security awareness to ensure teams recognize the criticality of this vulnerability and respond promptly to alerts. 9. Consider deploying web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the vulnerable component until patches are applied.