CVE-2026-11885 Power System update in Buffer Copy

High 8.4 Published 30 Jul 2026 Updated 30 Jul 2026

A crafted hypervisor call can crash the PowerVM hypervisor or compromise OS memory integrity, requiring a firmware patch.

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

What is CVE-2026-11885?

CVE-2026-11885 is a high-severity memory corruption vulnerability in IBM PowerVM Hypervisor, published on 30 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H1 A carefully crafted OS hypervisor call can cause the PowerVM hypervisor to crash or compromise OS memory integrity.

Weakness: CWE-120

Which versions are affected by CVE-2026-11885?

It affects 30 products.

Products include Ibm Power System E1050 \(9043-Mrx\) Firmware, Ibm Power System E1080 \(9080-Hex\) Firmware, Ibm Power System E1150 \(9043-Mru\) Firmware, Ibm Power System E1180 \(9080-Heu\) Firmware, Ibm Power System E950 \(9040-Mr9\) Firmware, Ibm Power System E980 \(9080-M9s\) Firmware and 24 more.

How do I fix CVE-2026-11885?

No fix has been published for CVE-2026-11885 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-11885 being exploited?

There is no known exploitation of CVE-2026-11885 in the wild and no public exploit code.

Sources

Also known as GHSA-f687-cr2f-7jv7.