CVE-2026-17504

Undergoing Analysis Undergoing Analysis - In Progress

Memory Corruption in IBM PowerVM Hypervisor Firmware

Publication date: 2026-09-24

Last updated on: 2026-09-29

Assigner: IBM Corporation

Description

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-24

Last Modified

2026-09-29

Generated

2026-11-08

AI Q&A

2026-09-24

EPSS Evaluated

2026-11-07

NVD

CVE-2026-17504

EUVD

EUVD-2026-85890

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	power_system_s1122_(9824-22a)_firmware	From fw1110.00 (inc) to fw1110.31 (exc)
ibm	power_system_s1122_(9824-22a)_firmware	fw1120.00
ibm	power_system_s1124_(9824-42a)_firmware	From fw1110.00 (inc) to fw1110.31 (exc)
ibm	power_system_s1124_(9824-42a)_firmware	fw1120.00
ibm	power_system_s1122s_(9824-22b)_firmware	From fw1110.00 (inc) to fw1110.31 (exc)
ibm	power_system_s1122s_(9824-22b)_firmware	fw1120.00
ibm	power_system_s1114_(9824-41b)_firmware	From fw1110.00 (inc) to fw1110.31 (exc)
ibm	power_system_s1114_(9824-41b)_firmware	fw1120.00
ibm	power_system_l1122_(9856-22h)_firmware	From fw1110.00 (inc) to fw1110.31 (exc)
ibm	power_system_l1122_(9856-22h)_firmware	fw1120.00
ibm	power_system_l1124_(9856-42h)_firmware	From fw1110.00 (inc) to fw1110.31 (exc)
ibm	power_system_l1124_(9856-42h)_firmware	fw1120.00
ibm	power_system_e1150_(9043-mru)_firmware	From fw1110.00 (inc) to fw1110.31 (exc)
ibm	power_system_e1150_(9043-mru)_firmware	fw1120.00
ibm	power_system_s1112_(9242-21b)_firmware	fw1120.00
ibm	power_system_s1112_(9242-21t)_firmware	fw1120.00
ibm	power_system_e1080_(9080-hex)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_s1022_(9105-22a)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_s1024_(9105-42a)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_s1022s_(9105-22b)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_s1014_(9105-41b)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_l1022_(9786-22h)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_l1024_(9786-42h)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_e1050_(9043-mrx)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_s1012_(9028-21b)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_e1180_(9080-heu)_firmware	From fw1110.00 (inc) to fw1110.31 (exc)
ibm	power_system_e1180_(9080-heu)_firmware	fw1120.00
ibm	power_system_s922_(9009-22g)_firmware	From fw950.00 (inc) to fw950.h3 (exc)
ibm	power_system_h922_(9223-22s)_firmware	From fw950.00 (inc) to fw950.h3 (exc)
ibm	power_system_s914_(9009-41g)_firmware	From fw950.00 (inc) to fw950.h3 (exc)
ibm	power_system_s924_(9009-42g)_firmware	From fw950.00 (inc) to fw950.h3 (exc)
ibm	power_system_h924_(9223-42s)_firmware	From fw950.00 (inc) to fw950.h3 (exc)
ibm	power_system_e950_(9040-mr9)_firmware	From fw950.00 (inc) to fw950.h3 (exc)
ibm	power_system_e980_(9080-m9s)_firmware	From fw950.00 (inc) to fw950.h3 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-191	The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

Attack-Flow Graph

Executive Summary

This vulnerability affects IBM PowerVM Hypervisor firmware versions FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3. An attacker with root access to a partition can send a specially crafted request to the partition firmware runtime, causing it to crash and potentially corrupt memory.

Detection Guidance

Detection involves checking the firmware version of your PowerVM Hypervisor. Compare installed versions against affected ranges (FW1120.00-FW1120.01, FW1110.00-FW1110.31, FW1060.00-FW1060.81, FW950.00-FW950.H3). Use IBM tools like 'lsmcode' or 'hmccli' to query firmware versions. Monitor system logs for crashes or memory corruption errors in partition firmware runtime.

Impact Analysis

The impact includes system crashes and potential memory corruption, which could lead to denial of service or instability in the affected PowerVM Hypervisor. Since the attacker requires root access to a partition, the risk is limited to environments where such access is already compromised.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by allowing unauthorized root access to a partition, which may lead to data breaches or memory corruption. Such incidents could violate data protection requirements under these regulations, particularly if sensitive or personal data is exposed or compromised.

Mitigation Strategies

Apply the recommended firmware updates from IBM Fix Central for your specific Power System model. Ensure no workarounds are used as none are available. Verify updates are applied correctly and reboot systems if required. Check IBM support page for version-specific fixes and compatibility.

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