CVE-2026-18509 IBM i is Affected By A Prvilege Escalation Vulnerability []
A local authenticated attacker can escalate privileges via the Navigator for i debugger to access sensitive data or create elevated profiles.
- 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-2026-18509?
CVE-2026-18509 is a high-severity vulnerability in Ibm I, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local authenticated attacker to gain privilege escalation via the Navigator for i debugger. This could allow the attacker to access or manipulate sensitive data on the system, or create new profiles with elevated privileges on the IBM i system.
Weakness: CWE-285
Which versions are affected by CVE-2026-18509?
It affects 1 product.
Products include Ibm I.
How do I fix CVE-2026-18509?
No fix has been published for CVE-2026-18509 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-18509 being exploited?
There is no known exploitation of CVE-2026-18509 in the wild and no public exploit code.
Other vulnerabilities in Ibm I
- CVE-2026-96119 IBM i is Affected By An Improper Control of Code Generation Vulnerability in HTTP Server Administration GUI
- CVE-2026-16860 IBM i is Affected By Remote Code Execution Vulnerability []
- CVE-2026-17083 IBM i is Affected By Multiple Vulnerabilities in the Debug Server
- CVE-2026-17218 IBM i is Affected By Remote Code Execution Vulnerability in Line Printer Daemon []
- CVE-2026-17276 IBM i is Affected By Multiple Vulnerabilities in Navigator for i
Sources
Also known as GHSA-mxp6-9c6h-3w2r.