{"cve":"CVE-2026-17042","nvd":{"published":"2026-08-19T20:17:12.127","modified":"2026-08-25T13:14:08.000","status":"Analyzed","description":"IBM Power Systems Firmware FW950.00 through FW950.H2, OP940.00 through OP940.a1 (Power9), and OP940.00 - OP940.81 (Power HMC) is affected by a vulnerability in host firmware NVRAM parsing. An attacker with root access to a guest partition on an OpenPOWER system can write a specially crafted NVRAM image, causing the host firmware boot stage to crash with possible memory corruption. This condition persists until operator intervention — clearing NVRAM via the service processor — to restore normal operation. This vulnerability only affects OpenPOWER systems; systems running PowerVM are not affected. Successful exploitation results in an integrity and availability impact to the managed system.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H","score":7.3},"cwes":["CWE-125"],"references":["https://www.ibm.com/support/pages/node/7283240"],"products":["ibm:power_hardware_management_console_\\(7063-cr2\\)_firmware","ibm:power_system_ac922_\\(8335-gth\\)_firmware","ibm:power_system_ac922_\\(8335-gtx\\)_firmware","ibm:power_system_e950_\\(9040-mr9\\)_firmware","ibm:power_system_e980_\\(9080-m9s\\)_firmware","ibm:power_system_h922_\\(9223-22s\\)_firmware","ibm:power_system_h924_\\(9223-42s\\)_firmware","ibm:power_system_s914_\\(9009-41g\\)_firmware","ibm:power_system_s922_\\(9009-22g\\)_firmware","ibm:power_system_s924_\\(9009-42g\\)_firmware"],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-17042","score":0.0014,"percentile":0.0336,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}