CVE-2026-16656

CriticalCVSS 9.8/10Last modified Oct 27, 2026

Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to gain root privileges due to improper authentication.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-287

Affected software

No affected versions have been published.

Timeline

Published
Aug 19, 2026
Last modified
Oct 27, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-166594.0MCUboot's serial-recovery image-upload handler bs_upload() in boot/boot_serial/src/boot_serial.c declares const struct flash_area *fap = NULCVE-2026-16666.1The Download Manager plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'redirect_to' parameter in all versions upCVE-2026-166605.3IBM Db2 Mirror for i 7.4, 7.5, and 7.6 could allow a remote attacker to cause a denial of service due to an out-of-bounds read.CVE-2026-166618.2IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vCVE-2026-166622.4boot_save_boot_status() in boot/bootutil/src/boot_record.c reads the image's EXPECTED_HASH_TLV into a stack buffer image_hash[IMAGE_HASH_SIZCVE-2026-166645.1MCUboot's Zephyr serial-recovery upload handler bs_upload() in boot/boot_serial/src/boot_serial.c decodes the host-supplied image field of aCVE-2026-16677.2The SEO Plugin by Squirrly SEO plugin for WordPress is vulnerable to Arbitrary Post Creation and Stored Cross-Site Scripting in all versionsCVE-2026-166712.9split_image_check() in boot/bootutil/src/loader.c declares a fixed uint8_t loader_hash[32] buffer and passes it as the out_hash out-parameteCVE-2026-166728.8IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to execute arbitrary code due to improper neutralizaCVE-2026-166738.8IBM DataStage on Cloud Pak for Data 5.4.0.0 IBM DataStage could allow a remote authenticated attacker to execute arbitrary OS commands due tCVE-2026-166748.8IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to execute arbitrary code due to an untrusted search path.CVE-2026-166758.5A privilege escalation security issue exists within FactoryTalk® Activation Manager. The security issue stems from custom actions in the ins
CVE-2026-16656: Critical severity, CVSS 9.8 | Vulnix