CVE-2026-13433 IBM i Access Client Solutions (ACS) is Affected By Multiple Vulnerabilities

High 8.3 Published 12 Aug 2026 Updated 13 Aug 2026

Attackers can execute arbitrary code on user workstations by exploiting unverified code downloads during updates from an IBM i system.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-13433?

CVE-2026-13433 is a high-severity vulnerability in IBM i Access Client Solutions, published on 12 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

IBM i Access Client Solutions 1.1.2.0 through 1.1.9.13 (ACS) is vulnerable to downloading unverified product code when configured to update from an IBM i. A bad actor could use this vulnerablity to run compromised code on the ACS user's workstation.

Weakness: CWE-494

Which versions are affected by CVE-2026-13433?

It affects 1 product.

Products include Ibm I Access Client Solutions.

How do I fix CVE-2026-13433?

No fix has been published for CVE-2026-13433 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-13433 being exploited?

There is no known exploitation of CVE-2026-13433 in the wild and no public exploit code.

Sources

Also known as GHSA-qr9x-rpfx-j6h7.