CVE-2026-19492

Analyzed Analyzed - Analysis Complete

Memory Disclosure in IBM PowerVM Hypervisor

Publication date: 2026-09-24

Last updated on: 2026-09-30

Assigner: IBM Corporation

Description

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in a hypervisor call interface. An attacker with root access to a guest partition can read a limited amount of hypervisor memory, potentially exposing sensitive data belonging to the hypervisor or other guest partitions hosted on the same system, resulting in a confidentiality impact. The attacker has no control over which memory contents are returned. This vulnerability is of particular concern in multi-tenant environments where guests may run arbitrary OS images.

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Meta Information

Published

2026-09-24

Last Modified

2026-09-30

Generated

2026-10-14

AI Q&A

2026-09-24

EPSS Evaluated

2026-10-13

NVD

CVE-2026-19492

EUVD

EUVD-2026-86007

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	power_system_s1122_(9824-22a)_firmware	From fw1110.00 (inc) to fw1110.32 (exc)
ibm	power_system_s1122_(9824-22a)_firmware	From fw1120.00 (inc) to fw1120.02 (exc)
ibm	power_system_s1124_(9824-42a)_firmware	From fw1110.00 (inc) to fw1110.32 (exc)
ibm	power_system_s1124_(9824-42a)_firmware	From fw1120.00 (inc) to fw1120.02 (exc)
ibm	power_system_s1122s_(9824-22b)_firmware	From fw1110.00 (inc) to fw1110.32 (exc)
ibm	power_system_s1122s_(9824-22b)_firmware	From fw1120.00 (inc) to fw1120.02 (exc)
ibm	power_system_s1114_(9824-41b)_firmware	From fw1110.00 (inc) to fw1110.32 (exc)
ibm	power_system_s1114_(9824-41b)_firmware	From fw1120.00 (inc) to fw1120.02 (exc)
ibm	power_system_l1122_(9856-22h)_firmware	From fw1110.00 (inc) to fw1110.32 (exc)
ibm	power_system_l1122_(9856-22h)_firmware	From fw1120.00 (inc) to fw1120.02 (exc)
ibm	power_system_l1124_(9856-42h)_firmware	From fw1110.00 (inc) to fw1110.32 (exc)
ibm	power_system_l1124_(9856-42h)_firmware	From fw1120.00 (inc) to fw1120.02 (exc)
ibm	power_system_e1150_(9043-mru)_firmware	From fw1110.00 (inc) to fw1110.32 (exc)
ibm	power_system_e1150_(9043-mru)_firmware	From fw1120.00 (inc) to fw1120.02 (exc)
ibm	power_system_s1112_(9242-21b)_firmware	From fw1120.00 (inc) to fw1120.02 (exc)
ibm	power_system_s1112_(9242-21t)_firmware	From fw1120.00 (inc) to fw1120.02 (exc)
ibm	power_system_e1080_(9080-hex)_firmware	From fw1060.00 (inc) to fw1060.82 (exc)
ibm	power_system_s1022_(9105-22a)_firmware	From fw1060.00 (inc) to fw1060.82 (exc)
ibm	power_system_s1024_(9105-42a)_firmware	From fw1060.00 (inc) to fw1060.82 (exc)
ibm	power_system_s1022s_(9105-22b)_firmware	From fw1060.00 (inc) to fw1060.82 (exc)
ibm	power_system_s1014_(9105-41b)_firmware	From fw1060.00 (inc) to fw1060.82 (exc)
ibm	power_system_l1022_(9786-22h)_firmware	From fw1060.00 (inc) to fw1060.82 (exc)
ibm	power_system_l1024_(9786-42h)_firmware	From fw1060.00 (inc) to fw1060.82 (exc)
ibm	power_system_e1050_(9043-mrx)_firmware	From fw1060.00 (inc) to fw1060.82 (exc)
ibm	power_system_s1012_(9028-21b)_firmware	From fw1060.00 (inc) to fw1060.82 (exc)
ibm	power_system_e1180_(9080-heu)_firmware	From fw1110.00 (inc) to fw1110.32 (exc)
ibm	power_system_e1180_(9080-heu)_firmware	From fw1120.00 (inc) to fw1120.02 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-457	The code uses a variable that has not been initialized, leading to unpredictable or unintended results.

Attack-Flow Graph

Executive Summary

This vulnerability affects IBM PowerVM Hypervisor firmware versions FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81. An attacker with root access to a guest partition can read a limited amount of hypervisor memory, potentially exposing sensitive data from the hypervisor or other guest partitions on the same system. The attacker cannot control which memory contents are accessed.

Detection Guidance

Detection primarily involves checking the firmware version of the PowerVM Hypervisor. Compare installed versions against affected ranges (FW1120.00-FW1120.01, FW1110.00-FW1110.31, FW1060.00-FW1060.81). Use IBM tools like the Hardware Management Console (HMC) or IVM to query firmware levels. No specific commands are provided in the resources.

Impact Analysis

If you are using an affected IBM PowerVM Hypervisor firmware version in a multi-tenant environment, an attacker with root access to a guest partition could read sensitive hypervisor or other guest partition data. This could lead to unauthorized access to confidential information, though the attacker has no control over what data is exposed.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, which may violate compliance requirements under GDPR, HIPAA, or other regulations that mandate strict data protection. Exposure of hypervisor or guest partition data could result in regulatory penalties or loss of compliance certifications.

Mitigation Strategies

Install the latest firmware updates provided by IBM (e.g., FW1110.32, FW1120.02, FW1060.82) to remediate the issue. Regularly check for updates from IBM and apply them promptly. No workarounds are available.

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