CVE-2026-17042Power System Out-of-bounds Read
Updated under an hour ago ()
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It affects IBM Power Systems Firmware and 10 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
- Weakness (CWE)
- CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- ibm
- NVD analysis
- Analyzed
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
IBM Power Systems Firmware ibm:power_systems_firmware | from FW950.00 through FW950.H2; from OP940.00 through OP940.a1; from OP940.00 through OP940.81 | CNA record |
ibm power_system_s922_(9009-22g)_firmware ibm:power_system_s922_(9009-22g)_firmware | from fw950.00 before fw950.h3 | NVD |
ibm power_system_h922_(9223-22s)_firmware ibm:power_system_h922_(9223-22s)_firmware | from fw950.00 before fw950.h3 | NVD |
ibm power_system_s914_(9009-41g)_firmware ibm:power_system_s914_(9009-41g)_firmware | from fw950.00 before fw950.h3 | NVD |
ibm power_system_s924_(9009-42g)_firmware ibm:power_system_s924_(9009-42g)_firmware | from fw950.00 before fw950.h3 | NVD |
ibm power_system_h924_(9223-42s)_firmware ibm:power_system_h924_(9223-42s)_firmware | from fw950.00 before fw950.h3 | NVD |
ibm power_system_e950_(9040-mr9)_firmware ibm:power_system_e950_(9040-mr9)_firmware | from fw950.00 before fw950.h3 | NVD |
ibm power_system_e980_(9080-m9s)_firmware ibm:power_system_e980_(9080-m9s)_firmware | from fw950.00 before fw950.h3 | NVD |
ibm power_system_ac922_(8335-gth)_firmware ibm:power_system_ac922_(8335-gth)_firmware | from op940 before op940.a2 | NVD |
ibm power_system_ac922_(8335-gtx)_firmware ibm:power_system_ac922_(8335-gtx)_firmware | from op940 before op940.a2 | NVD |
ibm power_hardware_management_console_(7063-cr2)_firmware ibm:power_hardware_management_console_(7063-cr2)_firmware | from op940 before op940.82 | NVD |
References
- https://www.ibm.com/support/pages/node/7283240vendor-advisory, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.