CVE-2025-63018 is a missing authorization vulnerability identified in the wproyal Bard product, affecting all versions up to and including 2.229. The vulnerability arises from incorrectly configured access control security levels, which allow an attacker with low privileges to bypass authorization checks. This can lead to unauthorized access to sensitive functions or data, resulting in full compromise of confidentiality, integrity, and availability of the affected system. The CVSS 3.1 base score of 8.8 reflects the high impact and relatively low attack complexity. The attack vector is network-based (AV:N), requiring only low privileges (PR:L) and no user interaction (UI:N), which increases the risk of exploitation in networked environments. Although no public exploits have been reported yet, the vulnerability’s characteristics make it a prime candidate for exploitation once weaponized. The lack of available patches at the time of publication further increases the urgency for organizations to implement compensating controls. The vulnerability is particularly critical because it can be exploited remotely and does not require user interaction, enabling attackers to escalate privileges or access sensitive data stealthily. The product Bard is used in various enterprise environments, and the missing authorization flaw could allow attackers to manipulate or disrupt critical business processes.

For European organizations, the impact of CVE-2025-63018 can be severe. Unauthorized access due to missing authorization controls can lead to data breaches involving personal data protected under GDPR, resulting in regulatory penalties and reputational damage. The compromise of system integrity and availability can disrupt business operations, especially in sectors relying on Bard for critical workflows. Organizations in finance, healthcare, and government sectors are particularly vulnerable due to the sensitivity of their data and the critical nature of their services. The network-based attack vector means that any exposed Bard instances on corporate networks or cloud environments are at risk. Additionally, the vulnerability could be leveraged as a foothold for lateral movement within networks, increasing the scope of potential damage. The absence of public exploits currently provides a window for proactive defense, but the high CVSS score indicates that once exploited, the consequences could be devastating. European entities must consider the potential for cross-border data compromise and the impact on supply chains that integrate Bard into their systems.

1. Immediately restrict network access to Bard instances by implementing network segmentation and firewall rules to limit exposure to trusted users and systems only. 2. Conduct a thorough audit of user privileges within Bard to ensure the principle of least privilege is enforced, removing unnecessary low-privilege accounts that could be leveraged for exploitation. 3. Monitor logs and network traffic for unusual access patterns or attempts to access unauthorized functions, using SIEM solutions with tailored detection rules for Bard. 4. Engage with the vendor wproyal to obtain patches or updates as soon as they become available and plan for rapid deployment. 5. Implement multi-factor authentication (MFA) for all users accessing Bard to add an additional layer of security. 6. Consider deploying web application firewalls (WAF) with custom rules to detect and block attempts to exploit missing authorization. 7. Educate system administrators and security teams about the vulnerability specifics to enhance incident response readiness. 8. Regularly review and update access control policies and configurations to prevent similar authorization issues in the future.