What is CVE-2026-17504?

CVE-2026-17504 is a medium-severity vulnerability in IBM Powervm Hypervisor, classified under Integer Underflow. CVSS score: 5.1/10. Published 2026-09-24.

How severe is CVE-2026-17504?

Medium severity. CVSS v3 base score is 5.1 out of 10.

Integer overflow in IBM Powervm Hypervisor

CVE-2026-17504

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 is affected by a vulnerability in the partition firmware runtime. An attacker with root access to a partition can send a specially crafted request to the partition firmware runtime, causing it to crash with possible memory corruption.

Published 2026-09-24 · last modified 2026-09-24.

CVSS v3 metric

CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

IBM Powervm Hypervisor

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

www.ibm.com/support/pages/node/7289130 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-17504?: CVE-2026-17504 is a medium-severity vulnerability in IBM Powervm Hypervisor, classified under Integer Underflow. CVSS score: 5.1/10. Published 2026-09-24.
How severe is CVE-2026-17504?: Medium severity. CVSS v3 base score is 5.1 out of 10.