CVE-2026-19492 This Power System update is being released to address

Low 3.2 Published 24 Sep 2026 Updated 24 Sep 2026

A local attacker with root access in a guest partition can read limited hypervisor memory, exposing sensitive data in multi-tenant environments.

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

What is CVE-2026-19492?

CVE-2026-19492 is a low-severity vulnerability in IBM PowerVM Hypervisor, published on 24 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in a hypervisor call interface. An attacker with root access to a guest partition can read a limited amount of hypervisor memory, potentially exposing sensitive data belonging to the hypervisor or other guest partitions hosted on the same system, resulting in a confidentiality impact. The attacker has no control over which memory contents are returned. This vulnerability is of particular concern in multi-tenant environments where guests may run arbitrary OS images.

Weakness: CWE-457

Which versions are affected by CVE-2026-19492?

It affects 19 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 L1022 \(9786-22h\) Firmware, Ibm Power System L1024 \(9786-42h\) Firmware and 13 more.

How do I fix CVE-2026-19492?

No fix has been published for CVE-2026-19492 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-19492 being exploited?

There is no known exploitation of CVE-2026-19492 in the wild and no public exploit code.

Sources

Also known as GHSA-q2mh-hq2m-m2mm.