CVE-2026-18527 Auth bypass in Administration Runtime Expert for i
An unauthenticated attacker can exploit the ARE GUI component to execute actions under another user's profile, gaining elevated privileges and accessing sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18527?
CVE-2026-18527 is a critical authentication bypass vulnerability in IBM Administration Runtime Expert for i, published on 28 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-384
Which versions are affected by CVE-2026-18527?
How do I fix CVE-2026-18527?
No fix has been published for CVE-2026-18527 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-18527 being exploited?
There is no known exploitation of CVE-2026-18527 in the wild and no public exploit code.
Sources
Also known as GHSA-rg54-x42p-hp27.