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ID

VAR-202509-0021


CVE

CVE-2025-9783


TITLE

TOTOLINK  of  A702R  Buffer error vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2025-014401

DESCRIPTION

A vulnerability was determined in TOTOLINK A702R 4.0.0-B20211108.1423. This issue affects the function sub_418030 of the file /boafrm/formParentControl. Executing manipulation of the argument submit-url can lead to buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK A702R is a wireless router manufactured by China's TOTOLINK Electronics, primarily used for home network connectivity and signal coverage. The TOTOLINK A702R suffers from a buffer overflow vulnerability caused by a failure to properly validate the length of input data in the submit-url parameter in the /boafrm/formParentControl file. This vulnerability could allow an attacker to execute arbitrary code on the system or cause a denial of service

Trust: 2.16

sources: NVD: CVE-2025-9783 // JVNDB: JVNDB-2025-014401 // CNVD: CNVD-2025-20791

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2025-20791

AFFECTED PRODUCTS

vendor:totolinkmodel:a702rscope:eqversion:4.0.0-b20211108.1423

Trust: 1.0

vendor:totolinkmodel:a702rscope:eqversion:a702r firmware 4.0.0-b20211108.1423

Trust: 0.8

vendor:totolinkmodel:a702rscope:eqversion: -

Trust: 0.8

vendor:totolinkmodel:a702rscope: - version: -

Trust: 0.8

vendor:totolinkmodel:a702r 4.0.0-b20211108.1423scope: - version: -

Trust: 0.6

sources: CNVD: CNVD-2025-20791 // JVNDB: JVNDB-2025-014401 // NVD: CVE-2025-9783

CVSS

SEVERITY

CVSSV2

CVSSV3

cna@vuldb.com: CVE-2025-9783
value: HIGH

Trust: 1.0

OTHER: JVNDB-2025-014401
value: HIGH

Trust: 0.8

CNVD: CNVD-2025-20791
value: HIGH

Trust: 0.6

cna@vuldb.com: CVE-2025-9783
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-2025-014401
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-2025-20791
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-2025-9783
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-2025-014401
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-2025-20791 // JVNDB: JVNDB-2025-014401 // NVD: CVE-2025-9783

PROBLEMTYPE DATA

problemtype:CWE-120

Trust: 1.0

problemtype:CWE-119

Trust: 1.0

problemtype:Buffer error (CWE-119) [ others ]

Trust: 0.8

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

Trust: 0.8

sources: JVNDB: JVNDB-2025-014401 // NVD: CVE-2025-9783

EXTERNAL IDS

db:NVDid:CVE-2025-9783

Trust: 3.2

db:VULDBid:322085

Trust: 1.8

db:JVNDBid:JVNDB-2025-014401

Trust: 0.8

db:CNVDid:CNVD-2025-20791

Trust: 0.6

sources: CNVD: CNVD-2025-20791 // JVNDB: JVNDB-2025-014401 // NVD: CVE-2025-9783

REFERENCES

url:https://vuldb.com/?id.322085

Trust: 1.8

url:https://vuldb.com/?submit.640991

Trust: 1.8

url:https://www.totolink.net/

Trust: 1.8

url:https://nvd.nist.gov/vuln/detail/cve-2025-9783

Trust: 1.4

url:https://github.com/rew1x/cve/blob/main/totolink/a702r/formparentcontrol/formparentcontrol.md#poc

Trust: 1.0

url:https://vuldb.com/?ctiid.322085

Trust: 1.0

url:https://github.com/rew1x/cve/blob/main/totolink/a702r/formparentcontrol/formparentcontrol.md

Trust: 1.0

sources: CNVD: CNVD-2025-20791 // JVNDB: JVNDB-2025-014401 // NVD: CVE-2025-9783

SOURCES

db:CNVDid:CNVD-2025-20791
db:JVNDBid:JVNDB-2025-014401
db:NVDid:CVE-2025-9783

LAST UPDATE DATE

2025-09-26T23:37:01.307000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2025-20791date:2025-09-09T00:00:00
db:JVNDBid:JVNDB-2025-014401date:2025-09-24T09:08:00
db:NVDid:CVE-2025-9783date:2025-09-04T16:52:53.580

SOURCES RELEASE DATE

db:CNVDid:CNVD-2025-20791date:2025-09-08T00:00:00
db:JVNDBid:JVNDB-2025-014401date:2025-09-24T00:00:00
db:NVDid:CVE-2025-9783date:2025-09-01T15:15:35.650