Details of VAR-202505-0635

ID

VAR-202505-0635

CVE

CVE-2025-45842

TITLE

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

Trust: 0.8

sources: JVNDB: JVNDB-2025-005206

DESCRIPTION

TOTOLINK NR1800X V9.1.0u.6681_B20230703 was discovered to contain an authenticated stack overflow via the ssid5g parameter in the setWiFiEasyCfg 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 ssid5g parameter in the setWiFiEasyCfg 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-2025-45842 // JVNDB: JVNDB-2025-005206 // CNVD: CNVD-2025-10922

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-10922

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-2025-10922 // JVNDB: JVNDB-2025-005206 // NVD: CVE-2025-45842

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2025-45842
value:	HIGH
Trust: 1.0
134c704f-9b21-4f2e-91b3-4a467353bcc0:	CVE-2025-45842
value:	HIGH
Trust: 1.0
NVD:	CVE-2025-45842
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2025-10922
value:	HIGH
Trust: 0.6

CNVD:	CNVD-2025-10922
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-2025-45842
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-2025-45842
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-2025-10922 // JVNDB: JVNDB-2025-005206 // NVD: CVE-2025-45842 // NVD: CVE-2025-45842

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-2025-005206 // NVD: CVE-2025-45842

EXTERNAL IDS

db:	NVD	id:	CVE-2025-45842	Trust: 3.2
db:	JVNDB	id:	JVNDB-2025-005206	Trust: 0.8
db:	CNVD	id:	CNVD-2025-10922	Trust: 0.6

sources: CNVD: CNVD-2025-10922 // JVNDB: JVNDB-2025-005206 // NVD: CVE-2025-45842

REFERENCES

url:	https://github.com/regainer27/cve-key/tree/main/bo3	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-2025-45842	Trust: 0.8

sources: CNVD: CNVD-2025-10922 // JVNDB: JVNDB-2025-005206 // NVD: CVE-2025-45842

SOURCES

db:	CNVD	id:	CNVD-2025-10922
db:	JVNDB	id:	JVNDB-2025-005206
db:	NVD	id:	CVE-2025-45842

LAST UPDATE DATE

2025-05-29T23:37:03.423000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2025-10922	date:	2025-05-28T00:00:00
db:	JVNDB	id:	JVNDB-2025-005206	date:	2025-05-19T06:20:00
db:	NVD	id:	CVE-2025-45842	date:	2025-05-16T15:39:45.950

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2025-10922	date:	2025-05-28T00:00:00
db:	JVNDB	id:	JVNDB-2025-005206	date:	2025-05-19T00:00:00
db:	NVD	id:	CVE-2025-45842	date:	2025-05-08T16:15:26.647