CVE-2026-16835: critical vulnerability in IBM Power Systems Firmware
Power System Improper Certificate Validation
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.6epss 0.4%
IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the FSP management network protocol. An unauthenticated attacker on the management network can bypass authentication and perform any administrative operation on the managed system, including control of partition power state, configuration, and console access across all hosted partitions, resulting in a confidentiality, integrity, and availability impact to the managed system.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
IBM · Power Systems FirmwareRelated CVEs — IBM Power Systems Firmware
In the same product, most dangerous first.
CVE-2026-16687CRITICALPower System Buffer OverflowEPSS 0.3%CVE-2026-16832HIGHPower System Buffer OverflowEPSS 0.3%CVE-2026-16828HIGHPower System Out-of-bounds ReadEPSS 0.3%CVE-2026-16938MEDIUMPower System Missing AuthorizationEPSS 0.2%CVE-2026-16930HIGHPower System Missing AuthorizationEPSS 0.2%CVE-2026-16933HIGHPower System Integer OverflowEPSS 0.2%