Details of VAR-202608-6747

ID

VAR-202608-6747

CVE

CVE-2026-17042

TITLE

IBM of IBM POWER HARDWARE MANAGEMENT CONSOLE (7063-CR2) Out-of-bounds read vulnerability in multiple firmware and other products

Trust: 0.8

sources: JVNDB: JVNDB-2026-030124

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. This condition is transmitted through the service processor. • Some of the information handled by the software may be rewritten. • The software may completely shut down

Trust: 1.62

sources: NVD: CVE-2026-17042 // JVNDB: JVNDB-2026-030124

AFFECTED PRODUCTS

vendor:	ibm	model:	power system ac922 \	scope:	lt	version:	op940.a2	Trust: 2.0
vendor:	ibm	model:	power system ac922 \	scope:	gte	version:	op940	Trust: 2.0
vendor:	ibm	model:	power system ac922	scope:	-	version:	-	Trust: 1.6
vendor:	ibm	model:	power system h924 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power system e980 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power system e980 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system h922 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power system e950 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power system s924 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system s914 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system h924 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system s922 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power system s922 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system s924 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power hardware management console \	scope:	lt	version:	op940.82	Trust: 1.0
vendor:	ibm	model:	power system h922 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system e950 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system s914 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power hardware management console \	scope:	gte	version:	op940	Trust: 1.0
vendor:	ibm	model:	power system e980	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system h924	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s922	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s924	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system h922	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power hardware management console	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s914	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system e950	scope:	-	version:	-	Trust: 0.8

sources: JVNDB: JVNDB-2026-030124 // NVD: CVE-2026-17042

CVSS

SEVERITY

CVSSV2

CVSSV3

psirt@us.ibm.com:	CVE-2026-17042
value:	HIGH
Trust: 1.0
OTHER:	JVNDB-2026-030124
value:	HIGH
Trust: 0.8

psirt@us.ibm.com:	CVE-2026-17042
baseSeverity:	HIGH
baseScore:	7.3
vectorString:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	CHANGED
confidentialityImpact:	NONE
integrityImpact:	LOW
availabilityImpact:	HIGH
exploitabilityScore:	2.0
impactScore:	4.7
version:	3.1
Trust: 1.0
OTHER:	JVNDB-2026-030124
baseSeverity:	HIGH
baseScore:	7.3
vectorString:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	CHANGED
confidentialityImpact:	NONE
integrityImpact:	LOW
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: JVNDB: JVNDB-2026-030124 // NVD: CVE-2026-17042

PROBLEMTYPE DATA

problemtype:	CWE-125	Trust: 1.0
problemtype:	Out-of-bounds read (CWE-125) [ others ]	Trust: 0.8

sources: JVNDB: JVNDB-2026-030124 // NVD: CVE-2026-17042

PATCH

title:

Security Bulletin

url:

https://www.ibm.com/support/pages/node/7283240

Trust: 0.8

sources: JVNDB: JVNDB-2026-030124

EXTERNAL IDS

db:	NVD	id:	CVE-2026-17042	Trust: 2.6
db:	JVNDB	id:	JVNDB-2026-030124	Trust: 0.8

sources: JVNDB: JVNDB-2026-030124 // NVD: CVE-2026-17042

REFERENCES

url:	https://www.ibm.com/support/pages/node/7283240	Trust: 1.0
url:	https://nvd.nist.gov/vuln/detail/cve-2026-17042	Trust: 0.8

sources: JVNDB: JVNDB-2026-030124 // NVD: CVE-2026-17042

SOURCES

db:	JVNDB	id:	JVNDB-2026-030124
db:	NVD	id:	CVE-2026-17042

LAST UPDATE DATE

2026-08-27T23:59:37.150000+00:00

SOURCES UPDATE DATE

db:	JVNDB	id:	JVNDB-2026-030124	date:	2026-08-26T07:13:00
db:	NVD	id:	CVE-2026-17042	date:	2026-08-25T13:14:08

SOURCES RELEASE DATE

db:	JVNDB	id:	JVNDB-2026-030124	date:	2026-08-26T00:00:00
db:	NVD	id:	CVE-2026-17042	date:	2026-08-19T20:17:12.127