Details of VAR-202603-4077

ID

VAR-202603-4077

CVE

CVE-2026-21002

TITLE

Samsung's Galaxy Store Digital Signature Verification Vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2026-010256

DESCRIPTION

Improper verification of cryptographic signature in Galaxy Store prior to version 4.6.03.8 allows local attacker to install arbitrary application. However, there is a possibility that all information handled by the software may be rewritten. Furthermore, the software will not shut down. Furthermore, attacks that exploit this vulnerability will not affect other software

Trust: 1.62

sources: NVD: CVE-2026-21002 // JVNDB: JVNDB-2026-010256

AFFECTED PRODUCTS

vendor:	samsung	model:	galaxy store	scope:	lt	version:	4.6.03.8	Trust: 1.0
vendor:	サムスン	model:	galaxy store	scope:	eq	version:	4.6.03.8	Trust: 0.8
vendor:	サムスン	model:	galaxy store	scope:	-	version:	-	Trust: 0.8
vendor:	サムスン	model:	galaxy store	scope:	eq	version:	-	Trust: 0.8

sources: JVNDB: JVNDB-2026-010256 // NVD: CVE-2026-21002

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2026-21002
value:	MEDIUM
Trust: 1.0
mobile.security@samsung.com:	CVE-2026-21002
value:	MEDIUM
Trust: 1.0
NVD:	CVE-2026-21002
value:	MEDIUM
Trust: 0.8

nvd@nist.gov:	CVE-2026-21002
baseSeverity:	MEDIUM
baseScore:	5.5
vectorString:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	HIGH
availabilityImpact:	NONE
exploitabilityScore:	1.8
impactScore:	3.6
version:	3.1
Trust: 1.0
NVD:	CVE-2026-21002
baseSeverity:	MEDIUM
baseScore:	5.5
vectorString:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	HIGH
availabilityImpact:	NONE
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: JVNDB: JVNDB-2026-010256 // NVD: CVE-2026-21002 // NVD: CVE-2026-21002

PROBLEMTYPE DATA

problemtype:	CWE-347	Trust: 1.0
problemtype:	Improper verification of digital signatures (CWE-347) [NVD evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2026-010256 // NVD: CVE-2026-21002

PATCH

title:

Security Updates Other Updates | Samsung Mobile Security

url:

https://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=03

Trust: 0.8

sources: JVNDB: JVNDB-2026-010256

EXTERNAL IDS

db:	NVD	id:	CVE-2026-21002	Trust: 2.6
db:	JVNDB	id:	JVNDB-2026-010256	Trust: 0.8

sources: JVNDB: JVNDB-2026-010256 // NVD: CVE-2026-21002

REFERENCES

url:	https://security.samsungmobile.com/serviceweb.smsb?year=2026&month=03	Trust: 1.0
url:	https://nvd.nist.gov/vuln/detail/cve-2026-21002	Trust: 0.8

sources: JVNDB: JVNDB-2026-010256 // NVD: CVE-2026-21002

SOURCES

db:	JVNDB	id:	JVNDB-2026-010256
db:	NVD	id:	CVE-2026-21002

LAST UPDATE DATE

2026-04-09T23:49:45.808000+00:00

SOURCES UPDATE DATE

db:	JVNDB	id:	JVNDB-2026-010256	date:	2026-04-08T01:56:00
db:	NVD	id:	CVE-2026-21002	date:	2026-04-07T00:34:23.430

SOURCES RELEASE DATE

db:	JVNDB	id:	JVNDB-2026-010256	date:	2026-04-08T00:00:00
db:	NVD	id:	CVE-2026-21002	date:	2026-03-16T14:18:11.367