CVE-2025-7784: 
Java vulnerability analysis and mitigation

CVE-2025-7784 is a privilege escalation vulnerability discovered in the Keycloak identity and access management system, specifically affecting systems with Fine-Grained Admin Permissions (FGAPv2) enabled. The vulnerability was disclosed on July 18, 2025, and affects Keycloak version 26.2.x. This security flaw allows an administrative user with the manage-users role to escalate their privileges to realm-admin due to improper privilege enforcement (Red Hat CVE).

The vulnerability has been assigned a CVSS v3.1 base score of 6.5 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N. The flaw is categorized under CWE-269 (Improper Privilege Management). The vulnerability exists in the admin permission enforcement logic, where privilege boundary checks are missing in role mapping operations via the admin REST interface (NVD, Red Hat Bugzilla).

The vulnerability compromises the intended separation of administrative duties and poses a security risk to the Keycloak realm. Successful exploitation allows complete administrative takeover of a Keycloak realm, potentially leading to unauthorized changes to users, roles, and realm configurations. The impact is particularly concerning in environments where multiple administrative users have restricted scopes (Red Hat CVE).

Red Hat has released security updates to address this vulnerability in Red Hat build of Keycloak 26.2.6. The fix is available through security advisory RHSA-2025:12015 for standalone installations and RHSA-2025:12016 for container deployments. Users are advised to back up their existing installation, including all applications, configuration files, and databases before applying the update (Red Hat Advisory).