Details of VAR-202506-1030

ID

VAR-202506-1030

CVE

CVE-2025-6302

TITLE

TOTOLINK of ex1200t Buffer error vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2025-008088

DESCRIPTION

A vulnerability, which was classified as critical, was found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713. Affected is the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument Comment leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of ex1200t The firmware contains a buffer error vulnerability and a stack-based buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. TOTOLINK EX1200T is a dual-band wireless signal amplifier, mainly used to expand the coverage of existing wireless networks. TOTOLINK EX1200T has a stack buffer overflow vulnerability, which is caused by the function setStaticDhcpConfig in the file /cgi-bin/cstecgi.cgi failing to correctly 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-2025-6302 // JVNDB: JVNDB-2025-008088 // CNVD: CNVD-2025-14530

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-14530

AFFECTED PRODUCTS

vendor:	totolink	model:	ex1200t	scope:	eq	version:	4.1.2cu.5232_b20210713	Trust: 1.0
vendor:	totolink	model:	ex1200t	scope:	eq	version:	-	Trust: 0.8
vendor:	totolink	model:	ex1200t	scope:	eq	version:	ex1200t firmware 4.1.2cu.5232 b20210713	Trust: 0.8
vendor:	totolink	model:	ex1200t	scope:	-	version:	-	Trust: 0.8
vendor:	totolink	model:	ex1200t 4.1.2cu.5232 b20210713	scope:	-	version:	-	Trust: 0.6

sources: CNVD: CNVD-2025-14530 // JVNDB: JVNDB-2025-008088 // NVD: CVE-2025-6302

CVSS

SEVERITY

CVSSV2

CVSSV3

cna@vuldb.com:	CVE-2025-6302
value:	HIGH
Trust: 1.0
OTHER:	JVNDB-2025-008088
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2025-14530
value:	HIGH
Trust: 0.6

cna@vuldb.com:	CVE-2025-6302
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: 1.0
OTHER:	JVNDB-2025-008088
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:	NONE
impactScore:	NONE
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.8
CNVD:	CNVD-2025-14530
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

cna@vuldb.com:	CVE-2025-6302
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: 1.0
OTHER:	JVNDB-2025-008088
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-2025-14530 // JVNDB: JVNDB-2025-008088 // NVD: CVE-2025-6302

PROBLEMTYPE DATA

problemtype:	CWE-119	Trust: 1.0
problemtype:	CWE-121	Trust: 1.0
problemtype:	Buffer error (CWE-119) [ others ]	Trust: 0.8
problemtype:	Stack-based buffer overflow (CWE-121) [ others ]	Trust: 0.8

sources: JVNDB: JVNDB-2025-008088 // NVD: CVE-2025-6302

EXTERNAL IDS

db:	NVD	id:	CVE-2025-6302	Trust: 3.2
db:	VULDB	id:	313302	Trust: 1.8
db:	JVNDB	id:	JVNDB-2025-008088	Trust: 0.8
db:	CNVD	id:	CNVD-2025-14530	Trust: 0.6

sources: CNVD: CNVD-2025-14530 // JVNDB: JVNDB-2025-008088 // NVD: CVE-2025-6302

REFERENCES

url:	https://kn0sinna.notion.site/totolink-ex1200t-stack-based-bufferoverflow-vulnerability-20fb1876cd6e80d5b4d1f7ec16de4ec2	Trust: 2.4
url:	https://vuldb.com/?id.313302	Trust: 1.8
url:	https://vuldb.com/?submit.595473	Trust: 1.8
url:	https://www.totolink.net/	Trust: 1.8
url:	https://vuldb.com/?ctiid.313302	Trust: 1.0
url:	https://nvd.nist.gov/vuln/detail/cve-2025-6302	Trust: 0.8

sources: CNVD: CNVD-2025-14530 // JVNDB: JVNDB-2025-008088 // NVD: CVE-2025-6302

SOURCES

db:	CNVD	id:	CNVD-2025-14530
db:	JVNDB	id:	JVNDB-2025-008088
db:	NVD	id:	CVE-2025-6302

LAST UPDATE DATE

2025-07-06T23:25:46.976000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2025-14530	date:	2025-07-01T00:00:00
db:	JVNDB	id:	JVNDB-2025-008088	date:	2025-07-04T09:12:00
db:	NVD	id:	CVE-2025-6302	date:	2025-07-02T17:40:51.843

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2025-14530	date:	2025-07-01T00:00:00
db:	JVNDB	id:	JVNDB-2025-008088	date:	2025-07-04T00:00:00
db:	NVD	id:	CVE-2025-6302	date:	2025-06-20T03:15:28.603