Details of VAR-202608-8039

ID

VAR-202608-8039

CVE

CVE-2026-4937

TITLE

IBM of Power System E1050 (9043-MRX) Firmware Vulnerabilities related to entropy deficiency in multiple products such as the above.

Trust: 0.8

sources: JVNDB: JVNDB-2026-030345

DESCRIPTION

IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 could allow a local attacker with administrative privileges to decrypt encrypted data due to certain hypervisor calls utilizing less entropy than requested. - No rewriting will occur to the information handled by the software. - The software will not stop

Trust: 1.62

sources: NVD: CVE-2026-4937 // JVNDB: JVNDB-2026-030345

AFFECTED PRODUCTS

vendor:	ibm	model:	power system l1022 \	scope:	lt	version:	fw1060.81	Trust: 1.0
vendor:	ibm	model:	power system s1022 \	scope:	gte	version:	fw1060.00	Trust: 1.0
vendor:	ibm	model:	power system e1150 \	scope:	lt	version:	fw1110.31	Trust: 1.0
vendor:	ibm	model:	power system e1080 \	scope:	lt	version:	fw1060.81	Trust: 1.0
vendor:	ibm	model:	power system l1024 \	scope:	gte	version:	fw1060.00	Trust: 1.0
vendor:	ibm	model:	power system s1124 \	scope:	gte	version:	fw1110.00	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 s1122s \	scope:	lt	version:	fw1110.31	Trust: 1.0
vendor:	ibm	model:	power system s1122 \	scope:	eq	version:	fw1120.00	Trust: 1.0
vendor:	ibm	model:	power system s1114 \	scope:	eq	version:	fw1120.00	Trust: 1.0
vendor:	ibm	model:	power system l1122 \	scope:	lt	version:	fw1110.31	Trust: 1.0
vendor:	ibm	model:	power system s1124 \	scope:	lt	version:	fw1110.31	Trust: 1.0
vendor:	ibm	model:	power system s1122s \	scope:	gte	version:	fw1110.00	Trust: 1.0
vendor:	ibm	model:	power system e1150 \	scope:	gte	version:	fw1110.00	Trust: 1.0
vendor:	ibm	model:	power system l1022 \	scope:	gte	version:	fw1060.00	Trust: 1.0
vendor:	ibm	model:	power system h924 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system h922 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system s1012 \	scope:	lt	version:	fw1060.81	Trust: 1.0
vendor:	ibm	model:	power system l1122 \	scope:	gte	version:	fw1110.00	Trust: 1.0
vendor:	ibm	model:	power system e1080 \	scope:	gte	version:	fw1060.00	Trust: 1.0
vendor:	ibm	model:	power system e1180 \	scope:	eq	version:	fw1120.00	Trust: 1.0
vendor:	ibm	model:	power system s922 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power system s1014 \	scope:	lt	version:	fw1060.81	Trust: 1.0
vendor:	ibm	model:	power system s1012 \	scope:	gte	version:	fw1060.00	Trust: 1.0
vendor:	ibm	model:	power system s1122 \	scope:	lt	version:	fw1110.31	Trust: 1.0
vendor:	ibm	model:	power system s1122 \	scope:	gte	version:	fw1110.00	Trust: 1.0
vendor:	ibm	model:	power system s914 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system s1014 \	scope:	gte	version:	fw1060.00	Trust: 1.0
vendor:	ibm	model:	power system s924 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power system s1114 \	scope:	gte	version:	fw1110.00	Trust: 1.0
vendor:	ibm	model:	power system e980 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system e1050 \	scope:	lt	version:	fw1060.81	Trust: 1.0
vendor:	ibm	model:	power system h922 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power system l1124 \	scope:	eq	version:	fw1120.00	Trust: 1.0
vendor:	ibm	model:	power system s1114 \	scope:	lt	version:	fw1110.31	Trust: 1.0
vendor:	ibm	model:	power system s1022s \	scope:	gte	version:	fw1060.00	Trust: 1.0
vendor:	ibm	model:	power system e1180 \	scope:	lt	version:	fw1110.31	Trust: 1.0
vendor:	ibm	model:	power system h924 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power system e950 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system s1022s \	scope:	lt	version:	fw1060.81	Trust: 1.0
vendor:	ibm	model:	power system e1050 \	scope:	gte	version:	fw1060.00	Trust: 1.0
vendor:	ibm	model:	power system s1122s \	scope:	eq	version:	fw1120.00	Trust: 1.0
vendor:	ibm	model:	power system e1150 \	scope:	eq	version:	fw1120.00	Trust: 1.0
vendor:	ibm	model:	power system e1180 \	scope:	gte	version:	fw1110.00	Trust: 1.0
vendor:	ibm	model:	power system l1122 \	scope:	eq	version:	fw1120.00	Trust: 1.0
vendor:	ibm	model:	power system s1124 \	scope:	eq	version:	fw1120.00	Trust: 1.0
vendor:	ibm	model:	power system s914 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power system l1124 \	scope:	lt	version:	fw1110.31	Trust: 1.0
vendor:	ibm	model:	power system s1024 \	scope:	lt	version:	fw1060.81	Trust: 1.0
vendor:	ibm	model:	power system e980 \	scope:	lt	version:	fw950.h3	Trust: 1.0
vendor:	ibm	model:	power system l1124 \	scope:	gte	version:	fw1110.00	Trust: 1.0
vendor:	ibm	model:	power system s1022 \	scope:	lt	version:	fw1060.81	Trust: 1.0
vendor:	ibm	model:	power system s1024 \	scope:	gte	version:	fw1060.00	Trust: 1.0
vendor:	ibm	model:	power system l1024 \	scope:	lt	version:	fw1060.81	Trust: 1.0
vendor:	ibm	model:	power system s922 \	scope:	gte	version:	fw950.00	Trust: 1.0
vendor:	ibm	model:	power system l1024	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s1022s	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s1122s	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s924	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s1024	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system l1124	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system e980	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s1124	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system e1050	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system e1080	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s1122	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system l1022	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s1114	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system e1180	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s1012	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system l1122	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system h924	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system e1150	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s1014	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system h922	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s1022	scope:	-	version:	-	Trust: 0.8
vendor:	ibm	model:	power system s922	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-2026-030345 // NVD: CVE-2026-4937

CVSS

SEVERITY

CVSSV2

CVSSV3

psirt@us.ibm.com:	CVE-2026-4937
value:	MEDIUM
Trust: 1.0
nvd@nist.gov:	CVE-2026-4937
value:	MEDIUM
Trust: 1.0
NVD:	CVE-2026-4937
value:	MEDIUM
Trust: 0.8

psirt@us.ibm.com:	CVE-2026-4937
baseSeverity:	MEDIUM
baseScore:	5.3
vectorString:	CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
attackVector:	LOCAL
attackComplexity:	HIGH
privilegesRequired:	HIGH
userInteraction:	NONE
scope:	CHANGED
confidentialityImpact:	HIGH
integrityImpact:	NONE
availabilityImpact:	NONE
exploitabilityScore:	0.8
impactScore:	4.0
version:	3.1
Trust: 1.0
nvd@nist.gov:	CVE-2026-4937
baseSeverity:	MEDIUM
baseScore:	6.0
vectorString:	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	HIGH
userInteraction:	NONE
scope:	CHANGED
confidentialityImpact:	HIGH
integrityImpact:	NONE
availabilityImpact:	NONE
exploitabilityScore:	1.5
impactScore:	4.0
version:	3.1
Trust: 1.0
NVD:	CVE-2026-4937
baseSeverity:	MEDIUM
baseScore:	6.0
vectorString:	CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	HIGH
userInteraction:	NONE
scope:	CHANGED
confidentialityImpact:	HIGH
integrityImpact:	NONE
availabilityImpact:	NONE
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: JVNDB: JVNDB-2026-030345 // NVD: CVE-2026-4937 // NVD: CVE-2026-4937

PROBLEMTYPE DATA

problemtype:	CWE-331	Trust: 1.0
problemtype:	Lack of entropy (CWE-331) [ others ]	Trust: 0.8

sources: JVNDB: JVNDB-2026-030345 // NVD: CVE-2026-4937

PATCH

title:

Security Bulletin

url:

https://www.ibm.com/support/pages/node/7283900

Trust: 0.8

sources: JVNDB: JVNDB-2026-030345

EXTERNAL IDS

db:	NVD	id:	CVE-2026-4937	Trust: 2.6
db:	JVNDB	id:	JVNDB-2026-030345	Trust: 0.8

sources: JVNDB: JVNDB-2026-030345 // NVD: CVE-2026-4937

REFERENCES

url:	https://www.ibm.com/support/pages/node/7283900	Trust: 1.0
url:	https://nvd.nist.gov/vuln/detail/cve-2026-4937	Trust: 0.8

sources: JVNDB: JVNDB-2026-030345 // NVD: CVE-2026-4937

SOURCES

db:	JVNDB	id:	JVNDB-2026-030345
db:	NVD	id:	CVE-2026-4937

LAST UPDATE DATE

2026-08-27T23:47:15.354000+00:00

SOURCES UPDATE DATE

db:	JVNDB	id:	JVNDB-2026-030345	date:	2026-08-26T07:26:00
db:	NVD	id:	CVE-2026-4937	date:	2026-08-25T20:33:37.260

SOURCES RELEASE DATE

db:	JVNDB	id:	JVNDB-2026-030345	date:	2026-08-26T00:00:00
db:	NVD	id:	CVE-2026-4937	date:	2026-08-19T21:16:55.570