CVE-2025-27559 is a vulnerability identified in the AI Playground software versions prior to v2.3.0 alpha. The core issue stems from incorrect default permissions configured within the software, which may allow an authenticated user with local access to escalate their privileges. Specifically, the vulnerability requires the attacker to have some level of authenticated access (low privileges) and local access to the system. Exploitation involves leveraging the misconfigured permissions to gain higher privileges than originally granted, potentially allowing the attacker to perform unauthorized actions or access sensitive data. The CVSS 4.0 base score of 5.4 (medium severity) reflects that the attack vector is local (AV:L), the attack complexity is high (AC:H), privileges required are low (PR:L), and user interaction is required (UI:A). The impact on confidentiality, integrity, and availability is rated high (C:H, I:H, A:H), indicating that successful exploitation could lead to significant compromise of the system. However, the high attack complexity and requirement for user interaction reduce the likelihood of widespread exploitation. No known exploits are currently reported in the wild, and no patches or mitigation links have been provided yet. This vulnerability is particularly relevant for environments where AI Playground software is deployed and used by multiple users with varying privilege levels, especially in development or testing environments where local access is common.

For European organizations utilizing AI Playground software, this vulnerability poses a risk of unauthorized privilege escalation by insiders or users with limited access. The potential impact includes unauthorized access to sensitive AI models, data manipulation, or disruption of AI workflows, which could compromise intellectual property and operational integrity. Organizations in sectors such as research institutions, AI development firms, and technology companies are particularly at risk. Given the high impact on confidentiality, integrity, and availability, exploitation could lead to data breaches, loss of trust, and operational downtime. The requirement for local access and authenticated user status limits remote exploitation but does not eliminate risk from insider threats or compromised user accounts. Additionally, the medium CVSS score suggests that while the vulnerability is serious, it is not trivially exploitable, allowing organizations some time to implement mitigations before widespread exploitation occurs.

To mitigate this vulnerability, European organizations should first verify if they are running affected versions of AI Playground software (prior to v2.3.0 alpha). Until an official patch is released, organizations should: 1) Restrict local access to systems running AI Playground software to trusted personnel only, enforcing strict physical and network access controls. 2) Review and harden user permission configurations within the software and underlying operating system to ensure least privilege principles are enforced. 3) Monitor user activities and audit logs for unusual privilege escalation attempts or suspicious behavior. 4) Implement multi-factor authentication to reduce risk from compromised credentials. 5) Isolate AI Playground environments from critical production systems to limit potential lateral movement. 6) Stay updated with vendor advisories and apply patches promptly once available. 7) Conduct security awareness training focusing on the risks of privilege escalation and the importance of safeguarding local access credentials.