{"id":"CVE-2026-17503","title":"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","summary":"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 …","severity":"medium","cvss":5.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","cwe":["CWE-20"],"vendor":"IBM","product":"PowerVM Hypervisor","affected":["powervm_hypervisor >= FW1120.00 <= FW1120.01","powervm_hypervisor >= FW1110.00 <= FW1110.31","powervm_hypervisor >= FW1060.00 <= FW1060.81","powervm_hypervisor >= FW950.00 <= FW950.H3"],"published":"2026-09-24","updated":"2026-09-24","sourceUpdated":"2026-09-24T15:17:19.717","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-17503","references":[{"url":"https://www.ibm.com/support/pages/node/7289133","label":"psirt@us.ibm.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-24T14:52:58.999216Z"},"ingestedAt":"2026-09-24T14:44:21.323Z","epss":0.00105,"epssPercentile":0.00984,"slug":"CVE-2026-17503","body":"## Overview\n\nIBM 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":28.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}