CVE-2025-6083 is a medium-severity vulnerability identified in Extreme Networks' ExtremeCloud Universal ZTNA product, version 25.2.0. The root cause is a syntax error in the 'searchKeyword' condition within the product's query mechanism. This flaw causes the system to bypass the intended owner_id filter, which is designed to restrict data searches to only those records associated with the authenticated user's owner_id. Due to this bypass, an authenticated user with limited privileges can perform search queries that return data across the entire database table, rather than being confined to their own data subset. This represents an improper authentication issue categorized under CWE-287, where the system fails to properly enforce access control restrictions. The vulnerability requires low privileges (PR:L) and partial authentication (AT:P), with user interaction (UI:A) needed to trigger the flaw. The attack vector is network-based (AV:N), and the vulnerability impacts confidentiality to a low extent (VC:L) but does not affect integrity or availability. The scope is high (S:H), indicating that the vulnerability affects resources beyond the initially vulnerable component. No known exploits are currently reported in the wild, and no patches have been published yet. The CVSS 4.0 score is 5.2, reflecting a medium severity level. The vulnerability could allow unauthorized data disclosure within organizations using this ZTNA solution, potentially exposing sensitive information to unauthorized users within the same environment.

For European organizations deploying ExtremeCloud Universal ZTNA version 25.2.0, this vulnerability poses a risk of unauthorized data exposure within their network access control environment. Since ZTNA solutions are critical for enforcing zero-trust security models by tightly controlling user access to resources, a bypass in owner_id filtering undermines data segregation and confidentiality principles. This could lead to insider threats or lateral movement scenarios where users gain visibility into data or configurations they should not access. The impact is primarily on confidentiality, potentially exposing sensitive operational or personal data. While the vulnerability does not directly affect system integrity or availability, the exposure of sensitive data could have regulatory implications under GDPR and other European data protection laws. Organizations in sectors with strict compliance requirements (e.g., finance, healthcare, government) may face increased risk of data breaches and associated penalties. Additionally, the high scope impact means that the vulnerability could affect multiple tenants or departments within a shared environment, increasing the potential blast radius.

Given the absence of an official patch at this time, European organizations should implement compensating controls to mitigate risk. First, restrict access to ExtremeCloud Universal ZTNA management interfaces and query capabilities to highly trusted administrators only, minimizing the number of users who can exploit the search functionality. Implement strict role-based access controls (RBAC) and monitor user activities for anomalous search patterns that could indicate exploitation attempts. Network segmentation and micro-segmentation should be enforced to limit lateral movement if unauthorized data access occurs. Organizations should also consider deploying data loss prevention (DLP) solutions to detect and block unauthorized data queries or exports. Regularly audit the ZTNA logs for unusual access patterns and prepare to apply vendor patches immediately upon release. Finally, conduct user training to raise awareness about the risk of abusing search functions and enforce strong authentication mechanisms to reduce the likelihood of compromised credentials being used to exploit this flaw.