CVE-2025-25019 is a vulnerability identified in IBM QRadar Suite Software versions 1.10.12.0 through 1.11.2.0 and IBM Cloud Pak for Security versions 1.10.0.0 through 1.10.11.0. The vulnerability is classified under CWE-613, which relates to insufficient session expiration. Specifically, the affected software does not properly invalidate user sessions upon logout. This flaw means that after a user logs out, the session token or session identifier remains valid and can potentially be reused by an attacker to impersonate the original user. The vulnerability affects the confidentiality and integrity of the system by allowing unauthorized access to user accounts without requiring authentication or user interaction. The CVSS v3.1 base score is 4.8, indicating a medium severity level. The vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N) shows that the attack vector is network-based but requires high attack complexity, no privileges, and no user interaction. The impact is limited to low confidentiality and integrity loss, with no impact on availability. No known exploits are reported in the wild, and no patches are currently linked, suggesting that mitigation may require vendor updates or configuration changes. The vulnerability is significant because IBM QRadar Suite is a widely used security information and event management (SIEM) platform, critical for monitoring and managing security events in enterprise environments. An attacker exploiting this vulnerability could impersonate users, potentially gaining unauthorized access to sensitive security monitoring data or administrative functions, undermining the security posture of affected organizations.

For European organizations, the impact of this vulnerability is notable given the widespread use of IBM QRadar Suite in enterprise security operations centers (SOCs) across various sectors including finance, government, telecommunications, and critical infrastructure. Unauthorized session reuse could allow attackers to bypass authentication controls, leading to unauthorized access to security event data, manipulation of logs, or disruption of incident response activities. This could result in delayed detection of breaches, data leakage, or manipulation of forensic evidence. The confidentiality and integrity of security monitoring data are critical for compliance with regulations such as GDPR, NIS Directive, and sector-specific cybersecurity requirements. Exploitation could lead to regulatory penalties, reputational damage, and operational disruptions. Although the vulnerability requires high attack complexity and no known exploits exist currently, the potential for insider threats or sophisticated attackers to leverage session reuse remains a concern. Organizations relying heavily on QRadar for security monitoring must consider the risk of session hijacking or impersonation as part of their threat model.

To mitigate this vulnerability, European organizations should implement the following specific measures: 1) Monitor IBM's official security advisories closely for patches or updates addressing CVE-2025-25019 and apply them promptly once available. 2) Enforce strict session management policies, including reducing session timeout durations and implementing multi-factor authentication (MFA) to limit the impact of session reuse. 3) Configure network segmentation and access controls to restrict QRadar administrative interfaces to trusted IP ranges and VPNs, minimizing exposure to external attackers. 4) Implement continuous monitoring and anomaly detection to identify unusual session activity or concurrent sessions from the same user account. 5) Educate SOC personnel on secure logout procedures and the risks of session reuse to reduce insider threat vectors. 6) Where possible, use web application firewalls (WAFs) or session management proxies that can enforce session invalidation upon logout as an interim control. 7) Regularly audit and review active sessions and user access logs to detect and respond to unauthorized session reuse quickly. These targeted actions go beyond generic advice by focusing on compensating controls and operational practices tailored to the nature of the vulnerability and the critical role of QRadar in security operations.