Details of VAR-202505-0869

ID

VAR-202505-0869

CVE

CVE-2025-45843

TITLE

TOTOLINK of nr1800x Out-of-bounds write vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2025-005214

DESCRIPTION

TOTOLINK NR1800X V9.1.0u.6681_B20230703 was discovered to contain an authenticated stack overflow via the ssid parameter in the setWiFiGuestCfg function. TOTOLINK of nr1800x 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. TOTOLINK NR1800X is an excellent 5G NR indoor Wi-Fi and SIP CPE from China's TOTOLINK Electronics. TOTOLINK NR1800X has a buffer overflow vulnerability. The vulnerability is caused by the ssid parameter in the setWiFiGuestCfg function failing to properly verify the length of the input data. Attackers can exploit this vulnerability to execute arbitrary code on the system or cause a denial of service

Trust: 2.16

sources: NVD: CVE-2025-45843 // JVNDB: JVNDB-2025-005214 // CNVD: CNVD-2025-10932

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-10932

AFFECTED PRODUCTS

vendor:	totolink	model:	nr1800x	scope:	eq	version:	9.1.0u.6681_b20230703	Trust: 1.0
vendor:	totolink	model:	nr1800x	scope:	-	version:	-	Trust: 0.8
vendor:	totolink	model:	nr1800x	scope:	eq	version:	nr1800x firmware 9.1.0u.6681 b20230703	Trust: 0.8
vendor:	totolink	model:	nr1800x	scope:	eq	version:	-	Trust: 0.8
vendor:	totolink	model:	nr1800x v9.1.0u.6681 b20230703	scope:	-	version:	-	Trust: 0.6

sources: CNVD: CNVD-2025-10932 // JVNDB: JVNDB-2025-005214 // NVD: CVE-2025-45843

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2025-45843
value:	HIGH
Trust: 1.0
134c704f-9b21-4f2e-91b3-4a467353bcc0:	CVE-2025-45843
value:	HIGH
Trust: 1.0
NVD:	CVE-2025-45843
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2025-10932
value:	HIGH
Trust: 0.6

CNVD:	CNVD-2025-10932
severity:	HIGH
baseScore:	9.0
vectorString:	AV:N/AC:L/AU:S/C:C/I:C/A:C
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	SINGLE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	8.0
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2025-45843
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.1
Trust: 2.0
NVD:	CVE-2025-45843
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: CNVD: CNVD-2025-10932 // JVNDB: JVNDB-2025-005214 // NVD: CVE-2025-45843 // NVD: CVE-2025-45843

PROBLEMTYPE DATA

problemtype:	CWE-121	Trust: 1.0
problemtype:	CWE-787	Trust: 1.0
problemtype:	Stack-based buffer overflow (CWE-121) [ others ]	Trust: 0.8
problemtype:	Out-of-bounds writing (CWE-787) [NVD evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2025-005214 // NVD: CVE-2025-45843

EXTERNAL IDS

db:	NVD	id:	CVE-2025-45843	Trust: 3.2
db:	JVNDB	id:	JVNDB-2025-005214	Trust: 0.8
db:	CNVD	id:	CNVD-2025-10932	Trust: 0.6

sources: CNVD: CNVD-2025-10932 // JVNDB: JVNDB-2025-005214 // NVD: CVE-2025-45843

REFERENCES

url:	https://github.com/regainer27/cve-key/tree/main/bo2	Trust: 2.4
url:	https://www.totolink.net/	Trust: 1.8
url:	https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/225/ids/36.html	Trust: 1.8
url:	https://nvd.nist.gov/vuln/detail/cve-2025-45843	Trust: 0.8

sources: CNVD: CNVD-2025-10932 // JVNDB: JVNDB-2025-005214 // NVD: CVE-2025-45843

SOURCES

db:	CNVD	id:	CNVD-2025-10932
db:	JVNDB	id:	JVNDB-2025-005214
db:	NVD	id:	CVE-2025-45843

LAST UPDATE DATE

2025-05-30T23:25:45.013000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2025-10932	date:	2025-05-29T00:00:00
db:	JVNDB	id:	JVNDB-2025-005214	date:	2025-05-19T06:46:00
db:	NVD	id:	CVE-2025-45843	date:	2025-05-16T15:39:40.383

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2025-10932	date:	2025-05-28T00:00:00
db:	JVNDB	id:	JVNDB-2025-005214	date:	2025-05-19T00:00:00
db:	NVD	id:	CVE-2025-45843	date:	2025-05-08T16:15:26.730