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ID

VAR-202505-1687


CVE

CVE-2025-45861


TITLE

TOTOLINK  of  A3002R  Classic buffer overflow vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2025-005114

DESCRIPTION

TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the routername parameter in the formDnsv6 interface. 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 produced by China's TOTOLINK Electronics. The vulnerability is caused by the failure of the routername parameter in the formDnsv6 interface 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-2025-45861 // JVNDB: JVNDB-2025-005114 // CNVD: CNVD-2025-11208

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2025-11208

AFFECTED PRODUCTS

vendor:totolinkmodel:a3002rscope:eqversion:4.0.0-b20230531.1404

Trust: 1.0

vendor:totolinkmodel:a3002rscope:eqversion: -

Trust: 0.8

vendor:totolinkmodel:a3002rscope:eqversion:a3002r firmware 4.0.0-b20230531.1404

Trust: 0.8

vendor:totolinkmodel:a3002rscope: - version: -

Trust: 0.8

vendor:totolinkmodel:a3002r v4.0.0-b20230531.1404scope: - version: -

Trust: 0.6

sources: CNVD: CNVD-2025-11208 // JVNDB: JVNDB-2025-005114 // NVD: CVE-2025-45861

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2025-45861
value: CRITICAL

Trust: 1.0

134c704f-9b21-4f2e-91b3-4a467353bcc0: CVE-2025-45861
value: CRITICAL

Trust: 1.0

NVD: CVE-2025-45861
value: CRITICAL

Trust: 0.8

CNVD: CNVD-2025-11208
value: HIGH

Trust: 0.6

CNVD: CNVD-2025-11208
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-2025-45861
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-2025-45861
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-2025-11208 // JVNDB: JVNDB-2025-005114 // NVD: CVE-2025-45861 // NVD: CVE-2025-45861

PROBLEMTYPE DATA

problemtype:CWE-120

Trust: 1.0

problemtype:Classic buffer overflow (CWE-120) [NVD evaluation ]

Trust: 0.8

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

Trust: 0.8

sources: JVNDB: JVNDB-2025-005114 // NVD: CVE-2025-45861

EXTERNAL IDS

db:NVDid:CVE-2025-45861

Trust: 3.2

db:JVNDBid:JVNDB-2025-005114

Trust: 0.8

db:CNVDid:CNVD-2025-11208

Trust: 0.6

sources: CNVD: CNVD-2025-11208 // JVNDB: JVNDB-2025-005114 // NVD: CVE-2025-45861

REFERENCES

url:https://github.com/jiangxiazhe/iot_hack/blob/main/totolink/a3002r/3/overflow.md

Trust: 2.4

url:https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/258/ids/36.html

Trust: 1.8

url:https://nvd.nist.gov/vuln/detail/cve-2025-45861

Trust: 0.8

sources: CNVD: CNVD-2025-11208 // JVNDB: JVNDB-2025-005114 // NVD: CVE-2025-45861

SOURCES

db:CNVDid:CNVD-2025-11208
db:JVNDBid:JVNDB-2025-005114
db:NVDid:CVE-2025-45861

LAST UPDATE DATE

2025-05-31T23:05:54.489000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2025-11208date:2025-05-30T00:00:00
db:JVNDBid:JVNDB-2025-005114date:2025-05-16T06:16:00
db:NVDid:CVE-2025-45861date:2025-05-15T18:37:49.147

SOURCES RELEASE DATE

db:CNVDid:CNVD-2025-11208date:2025-05-30T00:00:00
db:JVNDBid:JVNDB-2025-005114date:2025-05-16T00:00:00
db:NVDid:CVE-2025-45861date:2025-05-13T19:15:51.833