CVE-2026-18527: CWE-384 Session Fixation in IBM Administration Runtime Expert for i
Description
CVE-2026-18527 is a critical session fixation vulnerability in IBM Administration Runtime Expert for i version 1R1M0. It allows an unauthenticated remote attacker to execute actions under another user's authenticated profile, resulting in elevated privileges on the IBM i system. The vulnerability arises from the ARE GUI component processing. No patch or official remediation has been confirmed yet.
CVSS v3.1
Score 9.9critical
Affected software
IBM
Administration Runtime Expert for i
cpe:2.3:a:ibm:administration_runtime_expert_for_i:1r1m0:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
IBM Administration Runtime Expert for i version 1R1M0 contains a session fixation vulnerability (CWE-384) that could be exploited remotely by an unauthenticated attacker. This flaw allows the attacker to hijack another user's session and perform actions with elevated privileges on the IBM i system. The vulnerability is due to improper session management in the ARE GUI component. The CVSS v3.1 base score is 9.9, indicating critical severity with network attack vector, low attack complexity, no user interaction, and complete confidentiality, integrity, and availability impact. No official fix or patch information is currently available.
Potential Impact
An unauthenticated remote attacker can exploit this vulnerability to gain elevated privileges by executing actions under another user's authenticated profile on the IBM i system. This can lead to full compromise of confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to the Administration Runtime Expert for i interface and monitor for suspicious activity related to session management.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-31T19:47:47.809Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9206c1acd9273b4963cdfa
Added to database: 08/28/2026, 22:08:01 UTC
Last enriched: 09/07/2026, 15:25:10 UTC
Last updated: 10/13/2026, 18:48:18 UTC
Views: 95
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