CVE WatchAug 25, 2026

CVE-2026-17091

IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a v

CVSS

8.4

High

EPSS

0.1%

KEV

—

Exploit Today

0-100

Published: Aug 19, 2026 · Last modified: Aug 25, 2026 · CWE-190

EPSS · 30d

0.1%EPSS · 30 days0.1%

2026-08-202026-08-31

Technical description

IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the PowerVM hypervisor call interface. An attacker with root access to a guest partition can issue a specially crafted hypervisor call to inject an arbitrary amount of data into hypervisor or partition memory, resulting in either a crash causing a full platform re-IPL and terminating all hosted partitions, or corruption of hypervisor or partition memory. The PowerVM hypervisor will restart automatically; however, repeated exploitation could result in a sustained availability impact. Successful exploitation results in an integrity and availability impact to the managed system.

Official references

www.ibm.comhttps://www.ibm.com/support/pages/node/7283229

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