CVE-2025-25019: IBM Cloud Pak Security Auth Bypass Flaw

CVE-2025-25019 Overview

CVE-2025-25019 is a session management vulnerability affecting IBM QRadar Suite Software and IBM Cloud Pak for Security. The affected products fail to invalidate user sessions after logout, leaving session tokens active on the server side. An attacker who obtains a valid session identifier can reuse it to impersonate another user, even after that user has explicitly logged out. The flaw is tracked under CWE-613: Insufficient Session Expiration.

Critical Impact
Attackers with access to a captured session token can impersonate legitimate users on IBM QRadar Suite and Cloud Pak for Security, bypassing the logout control and accessing sensitive security operations data.

Affected Products

IBM QRadar Suite Software versions 1.10.12.0 through 1.11.2.0
IBM Cloud Pak for Security versions 1.10.0.0 through 1.10.11.0
Deployments exposing QRadar or Cloud Pak for Security web interfaces to networked users

Discovery Timeline

2025-06-03 - CVE-2025-25019 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-25019

Vulnerability Analysis

The vulnerability stems from insufficient session expiration in the authentication layer of IBM QRadar Suite Software and IBM Cloud Pak for Security. When a user initiates a logout, the client-side session state is cleared, but the server retains the session token as valid. Any actor holding that token can continue to authenticate API and web requests as the original user.

The issue enables user impersonation over the network without requiring credentials or user interaction. Exploitation results in limited confidentiality and integrity impact, since the attacker inherits only the privileges of the impersonated account. However, in a security operations platform like QRadar, this can expose alerts, offenses, tuning rules, and threat intelligence data.

Root Cause

The root cause is improper session lifecycle management. The logout handler does not invoke server-side session invalidation routines that would revoke the associated authentication token or cookie. As a result, tokens remain valid until their natural expiration window elapses, violating the assumption that logout terminates authenticated access.

Attack Vector

The attack requires the adversary to first obtain a valid session token. Common acquisition paths include shared workstation reuse, browser artifact theft, network interception on misconfigured deployments, or malware harvesting authentication cookies. After the legitimate user logs out, the attacker replays the token against the QRadar or Cloud Pak for Security endpoint and gains authenticated access as that user.

No verified public exploit code is available for this issue. The vulnerability is described in prose based on the IBM security advisory.

Detection Methods for CVE-2025-25019

Indicators of Compromise

Authenticated API or UI requests from a session token after the corresponding user submitted a /logout request
Multiple source IP addresses reusing the same session identifier within a short time window
Session tokens continuing to appear in access logs long past documented logout events
Access to QRadar offenses, rules, or admin consoles from unusual user-agents or geolocations for a given user

Detection Strategies

Correlate application access logs with logout events to identify session tokens active after logout
Baseline normal session duration per user and alert on sessions that exceed expected lifespan
Monitor authentication endpoints for token reuse from disparate client fingerprints
Inspect reverse proxy or WAF logs in front of QRadar for JSESSIONID or bearer tokens reused across IPs

Monitoring Recommendations

Enable verbose audit logging on IBM QRadar Suite and Cloud Pak for Security authentication modules
Forward web server and identity provider logs to a centralized platform for correlation
Alert on privileged actions performed by accounts within minutes of a logout event
Review session cookie configuration and confirm the presence of secure server-side revocation on logout

How to Mitigate CVE-2025-25019

Immediate Actions Required

Upgrade IBM QRadar Suite Software to the fixed release identified in the IBM Support advisory
Upgrade IBM Cloud Pak for Security to a version beyond 1.10.11.0 per vendor guidance
Rotate or invalidate all active session tokens after applying the patch
Require users to re-authenticate following the upgrade window

Patch Information

IBM has published remediation guidance and fixed builds. Consult the IBM Support Page for CVE-2025-25019 for the specific fix pack, upgrade path, and any prerequisite steps for QRadar Suite and Cloud Pak for Security clusters.

Workarounds

Reduce server-side session timeout values to shorten the exposure window for reusable tokens
Enforce short-lived authentication tokens through an upstream identity provider or reverse proxy
Restrict access to the QRadar and Cloud Pak for Security web interfaces to trusted management networks
Require multi-factor authentication and terminate idle sessions at the network layer when feasible

bash

# Configuration example: shorten session timeout at the reverse proxy layer
# nginx example enforcing short cookie lifetime and secure attributes
proxy_cookie_path / "/; HttpOnly; Secure; SameSite=Strict";
proxy_read_timeout 300s;
proxy_send_timeout 300s;