CVE-2026-17504
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Memory Corruption in IBM PowerVM Hypervisor Firmware

Publication date: 2026-09-24

Last updated on: 2026-09-24

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.

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Meta Information

Published
2026-09-24
Last Modified
2026-09-24
Generated
2026-09-24
AI Q&A
2026-09-24
EPSS Evaluated
N/A
NVD
CVE-2026-17504
EUVD
EUVD-2026-85890

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
ibm powervm_hypervisor From FW1120.00 (inc) to FW1120.01 (inc)
ibm powervm_hypervisor From FW1110.00 (inc) to FW1110.31 (inc)
ibm powervm_hypervisor From FW1060.00 (inc) to FW1060.81 (inc)
ibm powervm_hypervisor From FW950.00 (inc) to FW950.H3 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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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.

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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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