CVE-2026-7770 Code injection in i Access Family

High 8.8 Published 1 Jun 2026 Updated 2 Jun 2026

Attackers can execute arbitrary code on systems running IBM i Access Client Solutions when it is configured to listen for IBM i Navigator requests.

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-2026-7770?

CVE-2026-7770 is a high-severity code injection vulnerability in IBM i Access Family, published on 1 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

IBM i Access Family 1.1.5.0 through 1.1.9.12 IBM i Access Client Solutions (ACS) is vulnerable to remote code execution when configured to listen for requests from IBM i Navigator.

Weakness: CWE-74

Which versions are affected by CVE-2026-7770?

It affects 1 product.

Products include Ibm I Access Client Solutions.

How do I fix CVE-2026-7770?

No fix has been published for CVE-2026-7770 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-7770 being exploited?

There is no known exploitation of CVE-2026-7770 in the wild and no public exploit code.

Sources

Also known as GHSA-rm3f-295w-c3mc.