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ID

VAR-202507-2367


CVE

CVE-2025-7758


TITLE

TOTOLINK  of  t6  Buffer error vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2025-009748

DESCRIPTION

A vulnerability, which was classified as critical, has been found in TOTOLINK T6 up to 4.1.5cu.748_B20211015. Affected by this issue is the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi of the component HTTP POST Request Handler. The manipulation of the argument ip leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of t6 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 T6 is a wireless dual-band router released by China's Jiweng Electronics (TOTOLINK). It supports the MQTT protocol and Telnet service. The TOTOLINK T6 suffers from a buffer overflow vulnerability caused by a failure to properly validate the length of input data in the parameter "ip" in the file "/cgi-bin/cstecgi.cgi". An attacker could exploit this vulnerability to execute arbitrary code on the system or cause a denial of service

Trust: 2.16

sources: NVD: CVE-2025-7758 // JVNDB: JVNDB-2025-009748 // CNVD: CNVD-2025-17677

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2025-17677

AFFECTED PRODUCTS

vendor:totolinkmodel:t6scope:eqversion:v4.1.5cu.748_b20211015

Trust: 1.0

vendor:totolinkmodel:t6scope:eqversion:t6 firmware v4.1.5cu.748 b20211015

Trust: 0.8

vendor:totolinkmodel:t6scope: - version: -

Trust: 0.8

vendor:totolinkmodel:t6scope:eqversion: -

Trust: 0.8

vendor:totolinkmodel:t6 4.1.5cu.748 b20211015scope: - version: -

Trust: 0.6

sources: CNVD: CNVD-2025-17677 // JVNDB: JVNDB-2025-009748 // NVD: CVE-2025-7758

CVSS

SEVERITY

CVSSV2

CVSSV3

cna@vuldb.com: CVE-2025-7758
value: HIGH

Trust: 1.0

OTHER: JVNDB-2025-009748
value: HIGH

Trust: 0.8

CNVD: CNVD-2025-17677
value: HIGH

Trust: 0.6

cna@vuldb.com: CVE-2025-7758
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-2025-009748
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-2025-17677
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-2025-7758
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-2025-009748
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-2025-17677 // JVNDB: JVNDB-2025-009748 // NVD: CVE-2025-7758

PROBLEMTYPE DATA

problemtype:CWE-119

Trust: 1.0

problemtype:CWE-120

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-2025-009748 // NVD: CVE-2025-7758

EXTERNAL IDS

db:NVDid:CVE-2025-7758

Trust: 3.2

db:VULDBid:316748

Trust: 1.8

db:JVNDBid:JVNDB-2025-009748

Trust: 0.8

db:CNVDid:CNVD-2025-17677

Trust: 0.6

sources: CNVD: CNVD-2025-17677 // JVNDB: JVNDB-2025-009748 // NVD: CVE-2025-7758

REFERENCES

url:https://github.com/anduinbrian/public/blob/main/totolink%20t6/vuln/3.md

Trust: 2.4

url:https://github.com/anduinbrian/public/blob/main/totolink%20t6/vuln/3.md#poc

Trust: 1.8

url:https://vuldb.com/?id.316748

Trust: 1.8

url:https://vuldb.com/?submit.615734

Trust: 1.8

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

Trust: 1.8

url:https://vuldb.com/?ctiid.316748

Trust: 1.0

url:https://nvd.nist.gov/vuln/detail/cve-2025-7758

Trust: 0.8

sources: CNVD: CNVD-2025-17677 // JVNDB: JVNDB-2025-009748 // NVD: CVE-2025-7758

SOURCES

db:CNVDid:CNVD-2025-17677
db:JVNDBid:JVNDB-2025-009748
db:NVDid:CVE-2025-7758

LAST UPDATE DATE

2025-08-09T23:03:59.107000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2025-17677date:2025-08-07T00:00:00
db:JVNDBid:JVNDB-2025-009748date:2025-07-24T06:50:00
db:NVDid:CVE-2025-7758date:2025-07-23T20:58:43.130

SOURCES RELEASE DATE

db:CNVDid:CNVD-2025-17677date:2025-08-07T00:00:00
db:JVNDBid:JVNDB-2025-009748date:2025-07-24T00:00:00
db:NVDid:CVE-2025-7758date:2025-07-17T22:15:27.537