CVE-2026-16832: high-severity vulnerability in IBM Power Systems Firmware
Power System Buffer Overflow
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.4epss 0.3%
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 attacker with authenticated HMC administrator access can execute arbitrary code on the service processor, giving full control over the managed system, resulting in a confidentiality, integrity, and availability impact.
CVSS:3.1/AV:A/AC:L/PR:H/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-2026-16835CRITICALPower System Improper Certificate ValidationEPSS 0.4%CVE-2026-16687CRITICALPower 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%