Security Bulletin: This Power System update is being released to address CVE-2026-17028

Summary Power Systems Firmware is affected by a vulnerability in partition firmware during network boot. An unauthenticated attacker with access to the same network as a partition undergoing iSCSI SAN network boot can prevent that partition from completing its boot sequence. Other partitions and...

Security Bulletin: This Power System update is being released to address CVE-2026-18821

Summary Power Systems Firmware is affected by a vulnerability in partition firmware during network boot. An unauthenticated attacker on the same network as a partition undergoing network boot can send a malformed packet, allowing arbitrary code to be executed in the partition firmware and...

Security Bulletin: This Power System update is being released to address CVE-2026-17097

Summary Power Systems Firmware is affected by a vulnerability in the PowerVM hypervisor call interface. An attacker with root access to a guest partition can issue a specially crafted hypervisor call causing a virtual processor to become permanently unresponsive, requiring a full platform re-IPL ...

Security Bulletin: This Power System update is being released to address CVE-2026-17091

Summary Power Systems Firmware is affected by a vulnerability in the PowerVM hypervisor call interface. An attacker with root access to a guest partition can issue a specially crafted hypervisor call to inject an arbitrary amount of data into hypervisor or partition memory, resulting in either a...

Security Bulletin: This Power System update is being released to address CVE-2026-15961

Summary IBM PowerVM could allow a local attacker to obtain sensitive information or cause a denial of service due to improper control of format strings. Vulnerability Details CVEID:CVE-2026-15961 DESCRIPTION: IBM PowerVM could allow a local attacker to obtain sensitive information or cause a deni...

Security Bulletin: This Power System update is being released to address CVE-2026-4936

Summary PowerVM Platform KeyStore PKS and virtual TPM use persistent storage key seeds that result in an AES key with reduced strength. An attacker with access to the service processor or HMC could exploit this weakness to derive the encryption key and access the data. Vulnerability Details...

Vulnerabilities in IBM AIX and PowerVM VIOS

IBM SECURITY ADVISORY First Issued: Fri Aug 14 20:25:19 CDT 2026 Updated: Fri Aug 21 10:35:27 CDT 2026 Update: Updated the summary to highlight the additional installation instructions. The most recent version of this document is available here:...

CVE-2026-11885

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...

EUVD-2026-51238

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...

CVE-2026-11885

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...

CVE-2026-11885 Power System update in Buffer Copy

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...

CVE-2026-11885

CVE-2026-11885 affects IBM PowerVM Hypervisor. A crafted OS hypervisor call can crash the hypervisor or compromise OS memory integrity. Affected firmware: FW1110.00–FW1110.20, FW1060.00–FW1060.71, and FW950.00–FW950.H1. Root cause cited as CWE-120 (Buffer Copy without Checking Size of Input). Rem...

CVE-2026-11885 Power System update in Buffer Copy

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...

CVE-2026-4932

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...

CVE-2026-4932 This Power System update is being released to address Insufficient Entropy

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...

EUVD-2026-49954

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...

Security Bulletin: Security Vulnerabilities affect IBM Voice Gateway

Summary Security Vulnerabilities affect IBM Voice Gateway. The vulnerabilities have been addressed. Vulnerability Details CVEID:CVE-2026-50645 DESCRIPTION: There is no restriction on the amount of attachment headers that a message can contain when being deserialized by Apache CXF, which can lead ...

Security Bulletin: This Power System update is being released to address CVE-2026-4932

Summary A firmware issue was identified where the generated AES key used to initialize the Transparent Memory Encryption TME hardware has weakened encryption strength. Vulnerability Details CVEID:CVE-2026-4932 DESCRIPTION: PowerVM Hypervisor could allow an attacker with physical access to the...

Security Bulletin: This Power System update is being released to address CVE-2026-11885

Summary A carefully crafted OS hypervisor call can cause the PowerVM hypervisor to crash or compromise system or OS memory integrity. Vulnerability Details CVEID:CVE-2026-11885 DESCRIPTION: A carefully crafted OS hypervisor call can cause the PowerVM hypervisor to crash or compromise OS memory...

CVE-2026-14971

IBM PowerVM Novalink 2.2.02.2.12.2.1.1, and 2.3.02.3.0.12.3.12.3.2 IBM NovaLink APIs misconfiguration may increase attack surface and enable unintended or unauthorized operations under non-default conditions...