Vulnerability · Published Aug 28, 2026 · Assigned by ibm

CVE-2026-18527IBM Application Runtime Expert (ARE) for IBM i is vulnerable to a user gaining elevated privileges and sensitive information [, ].

Critical 9.9

In plain English

A critical-severity session fixation in Administration Runtime Expert for i from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).

Severity (CVSS 3.1)9.9Critical

Exploit odds (30 days)0.5%top 56.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

IBM Administration Runtime Expert for i 1R1M0 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.

Affected products (as reported)

Vendor	Product	Versions
IBM	Administration Runtime Expert for i	1R1M0

Weakness: CWE-384 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

https://www.ibm.com/support/pages/node/7284580 vendor-advisory, patch