IBM Powervm Hypervisor

IBM PowerVM 1120/1110/1060 FW Mem Leak via Hypervisor Call CVE-2026-19492
CVE-2026-19492 3.2 - Low - September 24, 2026

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.

Use of Uninitialized Variable

IBM PowerVM Hypervisor OOB Read CVE-2026-18870 (FW950.00FW1120.01)
CVE-2026-18870 4.3 - Medium - September 24, 2026

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 could allow a remote attacker to obtain sensitive information due to an out-of-bounds read.

Out-of-bounds Read

CVE-2026-17511 IBM PowerVM Hypervisor 1120/1110/1060/950 Dump Leak
CVE-2026-17511 3.4 - Low - September 24, 2026

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 resource dump interface. An attacker with authenticated administrator-level access to the HMC or service processor can obtain a limited snapshot of partition processor state. Successful exploitation results in a confidentiality impact to the managed system.

Improper Removal of Sensitive Information Before Storage or Transfer

IBM PowerVM Hypervisor FW1120.00FW1120.01 Runtime Crash & Mem Corruption
CVE-2026-17504 5.1 - Medium - September 24, 2026

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.

Integer underflow

IBM PowerVM Hypervisor FW1120.00-FW950.H3 Boot Config Integrity Flaw
CVE-2026-17503 5.1 - Medium - September 24, 2026

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 boot configuration. An attacker with root access to a partition can maliciously alter partition nvram, causing the partition to fail to boot. This condition persists until operator intervention deleting and recreating the partition configuration to restore normal operation. Successful exploitation results in an integrity and availability impact.

Improper Input Validation

IBM PowerVM Hypervisor RTAS Firmware Crash (FW1120.00-1120.01)
CVE-2026-17413 5.1 - Medium - September 24, 2026

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 RTAS firmware-to-OS interface. An attacker with administrator-level (root) access to a logical partition can send a specially crafted request to partition firmware, causing the partition to crash and become unavailable. Other partitions on the same managed system are not affected.

out-of-bounds array index

IBM PowerVM Hypervisor Format String Flaw (FW1060-1120) Vulnerability
CVE-2026-15961 5.2 - Medium - August 19, 2026

IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 IBM PowerVM could allow a local attacker to obtain sensitive information or cause a denial of service due to improper control of format strings.

Use of Externally-Controlled Format String

IBM PowerVM Hypervisor Crash via CVE-2026-11885 (FW950-1110)
CVE-2026-11885 8.4 - High - July 30, 2026

IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H1 A carefully crafted OS hypervisor call can cause the PowerVM hypervisor to crash or compromise OS memory integrity.

Classic Buffer Overflow

IBM PowerVM Hypervisor TME Entropy Leak (FW1060-FW1110)
CVE-2026-4932 4.2 - Medium - July 28, 2026

IBM PowerVM Hypervisor FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 could allow an attacker with physical access to the Transparent Memory Encryption (TME) hardware to decrypt encrypted memory due to insufficient cryptographic entropy.

Insufficient Entropy

IBM PowerVM Hypervisor Peer-Partition Data Exposure (FW1110.00-03)
CVE-2025-36194 2.8 - Low - February 02, 2026

IBM PowerVM Hypervisor FW1110.00 through FW1110.03, FW1060.00 through FW1060.51, and FW950.00 through FW950.F0 may expose a limited amount of data to a peer partition in specific shared processor configurations during certain operations.

Register Interface Allows Software Access to Sensitive Data or Security Settings

IBM PowerVM Hypervisor Local Admin Leak via Virtual TPM (FW950.00FW1110.03)
CVE-2025-36238 6 - Medium - February 02, 2026

IBM PowerVM Hypervisor FW1110.00 through FW1110.03, FW1060.00 through FW1060.51, and FW950.00 through FW950.F0 could allow a local user with administration privileges to obtain sensitive information from a Virtual TPM through a series of PowerVM service procedures.

Exposure of Sensitive System Information to an Unauthorized Control Sphere

IBM PowerVM Hypervisor FW950-1060 Denial of Service & Memory Disclosure
CVE-2025-36035 6.7 - Medium - September 14, 2025

IBM PowerVM Hypervisor FW950.00 through FW950.E0, FW1050.00 through FW1050.50, and FW1060.00 through FW1060.40 could allow a local privileged user to cause a denial of service by issuing a specially crafted IBM i hypervisor call that would disclose memory contents or consume excessive memory resources.

Allocation of Resources Without Limits or Throttling

PowerVM FW1050.00-1050.30 / FW1060.00-1060.20: User Can Induce Data Loss via gzip HW
CVE-2025-0986 4.4 - Medium - March 28, 2025

IBM PowerVM Hypervisor FW1050.00 through FW1050.30 and FW1060.00 through FW1060.20 could allow a local user, under certain Linux processor combability mode configurations, to cause undetected data loss or errors when performing gzip compression using HW acceleration.

Data Amplification

IBM PowerVM Hypervisor Platform KeyStore Service Access Vulnerability
CVE-2024-41781 5.9 - Medium - November 22, 2024

IBM PowerVM Platform KeyStore (IBM PowerVM Hypervisor FW950.00 through FW950.90, FW1030.00 through FW1030.60, FW1050.00 through FW1050.20, and FW1060.00 through FW1060.10 functionality can be compromised if an attacker gains service access to the HMC. An attacker that gains service access to the HMC can locate and through a series of service procedures decrypt data contained in the Platform KeyStore.

Exposure of Sensitive System Information to an Unauthorized Control Sphere

IBM PowerVM Hypervisor FW950.xFW1030.x allows reading of partition info
CVE-2023-46183 4.4 - Medium - February 06, 2024

IBM PowerVM Hypervisor FW950.00 through FW950.90, FW1020.00 through FW1020.40, and FW1030.00 through FW1030.30 could allow a system administrator to obtain sensitive partition information. IBM X-Force ID: 269695.

IBM PowerVM Hypervisor Sensitive Partition Data Disclosure in FW950-FW1030
CVE-2023-33851 4.9 - Medium - February 04, 2024

IBM PowerVM Hypervisor FW950.00 through FW950.90, FW1020.00 through FW1020.40, and FW1030.00 through FW1030.30 could reveal sensitive partition data to a system administrator. IBM X-Force ID: 257135.

IBM PowerVM Hypervisor Info Leak via HMC (FW950.00-950.71, FW1010-1010.40, FW1020-1020.20, FW1030-10
CVE-2023-25683 7.5 - High - June 15, 2023

IBM PowerVM Hypervisor FW950.00 through FW950.71, FW1010.00 through FW1010.40, FW1020.00 through FW1020.20, and FW1030.00 through FW1030.11 could allow an attacker to obtain sensitive information if they gain service access to the HMC. IBM X-Force ID: 247592.

IBM PowerVM Hypervisor DoS/Data Corruption via SRIOV VF (FW860-FW1030)
CVE-2023-30440 7.9 - High - May 23, 2023

IBM PowerVM Hypervisor FW860.00 through FW860.B3, FW950.00 through FW950.70, FW1010.00 through FW1010.50, FW1020.00 through FW1020.30, and FW1030.00 through FW1030.10 could allow a local attacker with control a partition that has been assigned SRIOV virtual function (VF) to cause a denial of service to a peer partition or arbitrary data corruption. IBM X-Force ID: 253175.

Improper Input Validation

IBM Power SRIOV VF Configuration Disabling via Power FW950
CVE-2022-34331 9.8 - Critical - November 11, 2022

After performing a sequence of Power FW950, FW1010 maintenance operations a SRIOV network adapter can be improperly configured leading to desired VEPA configuration being disabled. IBM X-Force ID: 229695.

authentification

An attacker that gains service access to the FSP (POWER9 only) or gains admin authority to a partition
CVE-2022-22445 6.5 - Medium - July 18, 2022

An attacker that gains service access to the FSP (POWER9 only) or gains admin authority to a partition can compromise partition firmware.

IBM PowerVM Hypervisor FW860
CVE-2021-38918 7.5 - High - January 05, 2022

IBM PowerVM Hypervisor FW860, FW940, FW950, and FW1010, through a specific sequence of VM management operations could lead to a violation of the isolation between peer VMs. IBM X-Force ID: 210019.

IBM PowerVM Hypervisor FW860, FW940, and FW950 could allow an attacker
CVE-2021-38917 9.1 - Critical - December 10, 2021

IBM PowerVM Hypervisor FW860, FW940, and FW950 could allow an attacker that gains service access to the FSP can read and write arbitrary host system memory through a series of carefully crafted service procedures. IBM X-Force ID: 210018.

IBM PowerVM Hypervisor FW940, FW950, and FW1010 could
CVE-2021-38937 6.5 - Medium - December 10, 2021

IBM PowerVM Hypervisor FW940, FW950, and FW1010 could allow an authenticated user to cause the system to crash using a specially crafted IBMi Hypervisor call. IBM X-Force ID: 210894.

IBM PowerVM Hypervisor FW860, FW930, FW940, and FW950 could allow a local user to create a specially crafted sequence of hypervisor calls from a partition
CVE-2021-29795 6 - Medium - September 21, 2021

IBM PowerVM Hypervisor FW860, FW930, FW940, and FW950 could allow a local user to create a specially crafted sequence of hypervisor calls from a partition that could crash the system. IBM X-Force ID: 203557.

Injection

The PowerVM Logical Partition Mobility(LPM) (PowerVM Hypervisor FW920, FW930, FW940, and FW950) encryption key exchange protocol
CVE-2021-20505 - July 29, 2021

The PowerVM Logical Partition Mobility(LPM) (PowerVM Hypervisor FW920, FW930, FW940, and FW950) encryption key exchange protocol can be compromised. If an attacker has the ability to capture encrypted LPM network traffic and is able to gain service access to the FSP they can use this information to perform a series of PowerVM service procedures to decrypt the captured migration traffic IBM X-Force ID: 198232