Security Bulletin
Summary
IBM Application Runtime Expert (ARE) for IBM i is vulnerable to a user gaining elevated privileges due to ARE GUI component processing [CVE-2026-18527] and allow an attacker to obtain sensitive information [CVE-2026-17203] as described in the vulnerability details section.
Vulnerability Details
CVEID: CVE-2026-18527
DESCRIPTION: IBM Application Runtime Expert (ARE) for i could allow a remote attacker to gain elevated privileges, caused by ARE GUI component processing. An unauthenticated attacker can exploit this vulnerability to execute actions under another user's authenticated profile gaining elevated privileges on the IBM i system.
CWE: CWE-384: Session Fixation
CVSS Source: IBM
CVSS Base score: 9.9
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
CVEID: CVE-2026-17203
DESCRIPTION: IBM Administration Runtime Expert for i could allow a remote authenticated attacker to obtain sensitive information due to improper authentication enforcement.
CWE: CWE-287: Improper Authentication
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM Administration Runtime Expert for i | V1R1M0 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability now.
| Release | 5733-ARE PTF Number(s) | PTF Download Link(s) |
| V1R1M0 |
SJ11185 After applying this PTF the legacy ARE GUI is nonfunctional. |
https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11185 |
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
21 Aug 2026: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.
Document Location
Worldwide
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Document Information
Modified date:
21 August 2026
Initial Publish date:
21 August 2026
UID
ibm17284580