Details of VAR-202110-0173

ID

VAR-202110-0173

CVE

CVE-2021-25493

TITLE

Samsung Notes libSPenBase Buffer Overflow Vulnerability (CNVD-2025-24720)

Trust: 0.6

sources: CNVD: CNVD-2025-24720

DESCRIPTION

Lack of boundary checking of a buffer in libSPenBase library of Samsung Notes prior to Samsung Note version 4.3.02.61 allows OOB read. Samsung Notes is an application developed by Samsung in South Korea. It provides a note-taking function

Trust: 1.53

sources: NVD: CVE-2021-25493 // CNVD: CNVD-2025-24720 // VULMON: CVE-2021-25493

IOT TAXONOMY

category:

['IoT']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-24720

AFFECTED PRODUCTS

vendor:	samsung	model:	notes	scope:	lte	version:	4.3.02.61	Trust: 1.0
vendor:	samsung	model:	note	scope:	lt	version:	4.3.02.61	Trust: 0.6

sources: CNVD: CNVD-2025-24720 // NVD: CVE-2021-25493

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2021-25493
value:	HIGH
Trust: 1.0
mobile.security@samsung.com:	CVE-2021-25493
value:	MEDIUM
Trust: 1.0
CNVD:	CNVD-2025-24720
value:	LOW
Trust: 0.6
CNNVD:	CNNVD-202110-351
value:	HIGH
Trust: 0.6
VULMON:	CVE-2021-25493
value:	LOW
Trust: 0.1

nvd@nist.gov:	CVE-2021-25493
severity:	LOW
baseScore:	3.6
vectorString:	AV:L/AC:L/AU:N/C:P/I:N/A:P
accessVector:	LOCAL
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	3.9
impactScore:	4.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.1
CNVD:	CNVD-2025-24720
severity:	LOW
baseScore:	3.6
vectorString:	AV:L/AC:L/AU:N/C:P/I:N/A:P
accessVector:	LOCAL
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	3.9
impactScore:	4.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2021-25493
baseSeverity:	HIGH
baseScore:	7.1
vectorString:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	1.8
impactScore:	5.2
version:	3.1
Trust: 1.0
mobile.security@samsung.com:	CVE-2021-25493
baseSeverity:	MEDIUM
baseScore:	4.0
vectorString:	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	LOW
integrityImpact:	NONE
availabilityImpact:	NONE
exploitabilityScore:	2.5
impactScore:	1.4
version:	3.1
Trust: 1.0

sources: CNVD: CNVD-2025-24720 // VULMON: CVE-2021-25493 // CNNVD: CNNVD-202110-351 // NVD: CVE-2021-25493 // NVD: CVE-2021-25493

PROBLEMTYPE DATA

problemtype:	CWE-119	Trust: 1.0
problemtype:	CWE-125	Trust: 1.0

sources: NVD: CVE-2021-25493

THREAT TYPE

local

Trust: 0.6

sources: CNNVD: CNNVD-202110-351

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202110-351

PATCH

title:	Samsung Notes libSPenBase library buffer overflow vulnerability patch	url:	https://www.cnvd.org.cn/patchInfo/show/355386	Trust: 0.6
title:	Samsung Notes Buffer error vulnerability fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=165717	Trust: 0.6

sources: CNVD: CNVD-2025-24720 // CNNVD: CNNVD-202110-351

EXTERNAL IDS

db:	NVD	id:	CVE-2021-25493	Trust: 2.3
db:	CNVD	id:	CNVD-2025-24720	Trust: 0.6
db:	CNNVD	id:	CNNVD-202110-351	Trust: 0.6
db:	VULMON	id:	CVE-2021-25493	Trust: 0.1

sources: CNVD: CNVD-2025-24720 // VULMON: CVE-2021-25493 // CNNVD: CNNVD-202110-351 // NVD: CVE-2021-25493

REFERENCES

url:	https://security.samsungmobile.com/serviceweb.smsb?year=2021&month=10	Trust: 1.7
url:	https://nvd.nist.gov/vuln/detail/cve-2021-25493	Trust: 1.2
url:	https://cwe.mitre.org/data/definitions/119.html	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1

sources: CNVD: CNVD-2025-24720 // VULMON: CVE-2021-25493 // CNNVD: CNNVD-202110-351 // NVD: CVE-2021-25493

SOURCES

db:	CNVD	id:	CNVD-2025-24720
db:	VULMON	id:	CVE-2021-25493
db:	CNNVD	id:	CNNVD-202110-351
db:	NVD	id:	CVE-2021-25493

LAST UPDATE DATE

2025-11-19T23:22:28.200000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2025-24720	date:	2025-10-23T00:00:00
db:	VULMON	id:	CVE-2021-25493	date:	2021-10-13T00:00:00
db:	CNNVD	id:	CNNVD-202110-351	date:	2021-10-14T00:00:00
db:	NVD	id:	CVE-2021-25493	date:	2021-10-13T15:16:30.500

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2025-24720	date:	2025-10-24T00:00:00
db:	VULMON	id:	CVE-2021-25493	date:	2021-10-06T00:00:00
db:	CNNVD	id:	CNNVD-202110-351	date:	2021-10-06T00:00:00
db:	NVD	id:	CVE-2021-25493	date:	2021-10-06T18:15:09.860