Details of VAR-202211-1506

ID

VAR-202211-1506

CVE

CVE-2022-44255

TITLE

TOTOLINK of lr350 Out-of-bounds write vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2022-021445

DESCRIPTION

TOTOLINK LR350 V9.3.5u.6369_B20220309 contains a pre-authentication buffer overflow in the main function via long post data. TOTOLINK of lr350 An out-of-bounds write vulnerability exists in firmware.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK LR350 is a 4G LTE router released by China's TOTOLINK Electronics. It converts 4G signals into wired signals and is suitable for home and office use. The TOTOLINK LR350 suffers from a buffer overflow vulnerability. An attacker could exploit this vulnerability to cause remote code execution

Trust: 2.16

sources: NVD: CVE-2022-44255 // JVNDB: JVNDB-2022-021445 // CNVD: CNVD-2025-21018

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-21018

AFFECTED PRODUCTS

vendor:	totolink	model:	lr350	scope:	eq	version:	9.3.5u.6369_b20220309	Trust: 1.0
vendor:	totolink	model:	lr350	scope:	-	version:	-	Trust: 0.8
vendor:	totolink	model:	lr350	scope:	eq	version:	-	Trust: 0.8
vendor:	totolink	model:	lr350	scope:	eq	version:	lr350 firmware 9.3.5u.6369 b20220309	Trust: 0.8
vendor:	totolink	model:	lr350 v9.3.5u.6369 b20220309	scope:	-	version:	-	Trust: 0.6

sources: CNVD: CNVD-2025-21018 // JVNDB: JVNDB-2022-021445 // NVD: CVE-2022-44255

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2022-44255
value:	CRITICAL
Trust: 1.0
134c704f-9b21-4f2e-91b3-4a467353bcc0:	CVE-2022-44255
value:	CRITICAL
Trust: 1.0
NVD:	CVE-2022-44255
value:	CRITICAL
Trust: 0.8
CNVD:	CNVD-2025-21018
value:	HIGH
Trust: 0.6
CNNVD:	CNNVD-202211-3410
value:	CRITICAL
Trust: 0.6

CNVD:	CNVD-2025-21018
severity:	HIGH
baseScore:	10.0
vectorString:	AV:N/AC:L/AU:N/C:C/I:C/A:C
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	10.0
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2022-44255
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	5.9
version:	3.1
Trust: 2.0
NVD:	CVE-2022-44255
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: CNVD: CNVD-2025-21018 // CNNVD: CNNVD-202211-3410 // JVNDB: JVNDB-2022-021445 // NVD: CVE-2022-44255 // NVD: CVE-2022-44255

PROBLEMTYPE DATA

problemtype:	CWE-787	Trust: 1.0
problemtype:	Out-of-bounds writing (CWE-787) [NVD evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2022-021445 // NVD: CVE-2022-44255

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202211-3410

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202211-3410

EXTERNAL IDS

db:	NVD	id:	CVE-2022-44255	Trust: 3.8
db:	JVNDB	id:	JVNDB-2022-021445	Trust: 0.8
db:	CNVD	id:	CNVD-2025-21018	Trust: 0.6
db:	CNNVD	id:	CNNVD-202211-3410	Trust: 0.6

sources: CNVD: CNVD-2025-21018 // CNNVD: CNNVD-202211-3410 // JVNDB: JVNDB-2022-021445 // NVD: CVE-2022-44255

REFERENCES

url:	https://brief-nymphea-813.notion.site/lr350-bof-main-pre-authentication-9475d39331cd4d8bae67c8560ce279b7	Trust: 2.4
url:	https://nvd.nist.gov/vuln/detail/cve-2022-44255	Trust: 1.4
url:	https://cxsecurity.com/cveshow/cve-2022-44255/	Trust: 0.6

sources: CNVD: CNVD-2025-21018 // CNNVD: CNNVD-202211-3410 // JVNDB: JVNDB-2022-021445 // NVD: CVE-2022-44255

SOURCES

db:	CNVD	id:	CNVD-2025-21018
db:	CNNVD	id:	CNNVD-202211-3410
db:	JVNDB	id:	JVNDB-2022-021445
db:	NVD	id:	CVE-2022-44255

LAST UPDATE DATE

2025-09-12T23:27:22.100000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2025-21018	date:	2025-09-11T00:00:00
db:	CNNVD	id:	CNNVD-202211-3410	date:	2022-11-28T00:00:00
db:	JVNDB	id:	JVNDB-2022-021445	date:	2023-11-10T08:16:00
db:	NVD	id:	CVE-2022-44255	date:	2025-04-25T20:15:33.357

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2025-21018	date:	2025-09-10T00:00:00
db:	CNNVD	id:	CNNVD-202211-3410	date:	2022-11-23T00:00:00
db:	JVNDB	id:	JVNDB-2022-021445	date:	2023-11-10T00:00:00
db:	NVD	id:	CVE-2022-44255	date:	2022-11-23T16:15:10.770