Details of VAR-202502-2734

ID

VAR-202502-2734

CVE

CVE-2025-25635

TITLE

TOTOLINK of A3002R Classic buffer overflow vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2025-002949

DESCRIPTION

TOTOlink A3002R V1.1.1-B20200824.0128 contains a buffer overflow vulnerability. The vulnerability arises from the improper input validation of the pppoe_dns1 parameter in the formIpv6Setup interface of /bin/boa. TOTOLINK of A3002R Firmware has a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. TOTOLINK A3002R is a wireless router from China's TOTOLINK Electronics. Remote attackers can exploit this vulnerability to execute arbitrary code on the system or cause a denial of service attack

Trust: 2.16

sources: NVD: CVE-2025-25635 // JVNDB: JVNDB-2025-002949 // CNVD: CNVD-2025-05395

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-05395

AFFECTED PRODUCTS

vendor:	totolink	model:	a3002r	scope:	eq	version:	1.1.1-b20200824.0128	Trust: 1.0
vendor:	totolink	model:	a3002r	scope:	eq	version:	-	Trust: 0.8
vendor:	totolink	model:	a3002r	scope:	-	version:	-	Trust: 0.8
vendor:	totolink	model:	a3002r	scope:	eq	version:	a3002r firmware 1.1.1-b20200824.0128	Trust: 0.8
vendor:	totolink	model:	a3002r v1.1.1-b20200824.0128	scope:	-	version:	-	Trust: 0.6

sources: CNVD: CNVD-2025-05395 // JVNDB: JVNDB-2025-002949 // NVD: CVE-2025-25635

CVSS

SEVERITY

CVSSV2

CVSSV3

134c704f-9b21-4f2e-91b3-4a467353bcc0:	CVE-2025-25635
value:	HIGH
Trust: 1.0
OTHER:	JVNDB-2025-002949
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2025-05395
value:	HIGH
Trust: 0.6

CNVD:	CNVD-2025-05395
severity:	HIGH
baseScore:	7.7
vectorString:	AV:A/AC:L/AU:S/C:C/I:C/A:C
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	SINGLE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	5.1
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

134c704f-9b21-4f2e-91b3-4a467353bcc0:	CVE-2025-25635
baseSeverity:	HIGH
baseScore:	8.0
vectorString:	CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.1
impactScore:	5.9
version:	3.1
Trust: 1.0
OTHER:	JVNDB-2025-002949
baseSeverity:	HIGH
baseScore:	8.0
vectorString:	CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT 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-2025-05395 // JVNDB: JVNDB-2025-002949 // NVD: CVE-2025-25635

PROBLEMTYPE DATA

problemtype:	CWE-120	Trust: 1.0
problemtype:	Classic buffer overflow (CWE-120) [ others ]	Trust: 0.8

sources: JVNDB: JVNDB-2025-002949 // NVD: CVE-2025-25635

EXTERNAL IDS

db:	NVD	id:	CVE-2025-25635	Trust: 3.2
db:	JVNDB	id:	JVNDB-2025-002949	Trust: 0.8
db:	CNVD	id:	CNVD-2025-05395	Trust: 0.6

sources: CNVD: CNVD-2025-05395 // JVNDB: JVNDB-2025-002949 // NVD: CVE-2025-25635

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2025-25635	Trust: 1.4
url:	https://github.com/sunnyyangyaya/firmcrosser/blob/main/totolink/totolink-a3002r-formipv6setup-pppoe_dns1.md	Trust: 1.0

sources: CNVD: CNVD-2025-05395 // JVNDB: JVNDB-2025-002949 // NVD: CVE-2025-25635

SOURCES

db:	CNVD	id:	CNVD-2025-05395
db:	JVNDB	id:	JVNDB-2025-002949
db:	NVD	id:	CVE-2025-25635

LAST UPDATE DATE

2025-04-04T22:00:25.635000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2025-05395	date:	2025-03-19T00:00:00
db:	JVNDB	id:	JVNDB-2025-002949	date:	2025-04-04T05:35:00
db:	NVD	id:	CVE-2025-25635	date:	2025-04-03T15:37:36.397

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2025-05395	date:	2025-03-07T00:00:00
db:	JVNDB	id:	JVNDB-2025-002949	date:	2025-04-04T00:00:00
db:	NVD	id:	CVE-2025-25635	date:	2025-02-28T19:15:37.223