CVE-2026-17042
Estado: AnalizadaAlta (7.3)—
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
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
- Puntuación base: 7.3
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.14%
- Percentil entre todas las CVEs puntuadas: 3
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation90 % - Impacto principal
T1499Endpoint Denial of Serviceimpact85 % - Impacto secundario
T1565.001Stored Data Manipulationimpact75 %
Vector AV:L/PR:L indica acceso local con privilegios limitados (root en partición guest). El atacante escribe imagen NVRAM malformada causando crash de firmware (DoS/disponibilidad) e corrupción de memoria (integridad).
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (10)
IBM — Power Hardware Management Console (7063-cr2) FirmwareIBM — Power System Ac922 (8335-gth) FirmwareIBM — Power System Ac922 (8335-gtx) FirmwareIBM — Power System E950 (9040-mr9) FirmwareIBM — Power System E980 (9080-m9s) FirmwareIBM — Power System H922 (9223-22s) FirmwareIBM — Power System H924 (9223-42s) FirmwareIBM — Power System S914 (9009-41g) FirmwareIBM — Power System S922 (9009-22g) FirmwareIBM — Power System S924 (9009-42g) Firmware
CWE
- CWE-125
Referencias
JSON original (NVD)
Mostrar
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