CVE-2026-17414 Power System Improper Input Validation

High 8.1 Published 19 Aug 2026 Updated 20 Aug 2026

An attacker on the same network can disrupt network boot or substitute boot images on IBM PowerVM partitions, leading to code execution or denial of service.

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-2026-17414?

CVE-2026-17414 is a high-severity vulnerability in IBM PowerVM Hypervisor, published on 19 Aug 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, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 Power Systems Firmware is affected by a vulnerability in partition firmware during network boot. An unauthenticated attacker with access to the same network as a partition performing a network boot can prevent that partition from completing its boot sequence. On partitions where OS secure boot is not enabled, which is the default configuration, the attacker can also substitute the boot image, compromising everything subsequently loaded by that partition. Other partitions and the managed system are not affected. Only partitions actively performing a network boot are affected, resulting in a confidentiality, integrity, and availability impact.

Weakness: CWE-20

Which versions are affected by CVE-2026-17414?

It affects 26 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 20 more.

How do I fix CVE-2026-17414?

No fix has been published for CVE-2026-17414 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-17414 being exploited?

There is no known exploitation of CVE-2026-17414 in the wild and no public exploit code.

Sources

Also known as GHSA-27rm-jfch-vpvr.