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ID

VAR-202507-2447


CVE

CVE-2025-7912


TITLE

TOTOLINK  of  t6  Buffer error vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2025-009714

DESCRIPTION

A vulnerability, which was classified as critical, has been found in TOTOLINK T6 4.1.5cu.748_B20211015. This issue affects the function recvSlaveUpgstatus of the component MQTT Service. The manipulation of the argument s leads to buffer overflow. The attack may be initiated 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 TOTOLINK Electronics. It supports the MQTT protocol and Telnet service, and is primarily designed for home and small business networking. An attacker could exploit this vulnerability to execute arbitrary code or cause a denial of service

Trust: 2.16

sources: NVD: CVE-2025-7912 // JVNDB: JVNDB-2025-009714 // CNVD: CNVD-2025-17538

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2025-17538

AFFECTED PRODUCTS

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

Trust: 1.0

vendor:totolinkmodel:t6scope:eqversion: -

Trust: 0.8

vendor:totolinkmodel:t6scope: - version: -

Trust: 0.8

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

Trust: 0.8

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

Trust: 0.6

sources: CNVD: CNVD-2025-17538 // JVNDB: JVNDB-2025-009714 // NVD: CVE-2025-7912

CVSS

SEVERITY

CVSSV2

CVSSV3

cna@vuldb.com: CVE-2025-7912
value: HIGH

Trust: 1.0

OTHER: JVNDB-2025-009714
value: HIGH

Trust: 0.8

CNVD: CNVD-2025-17538
value: HIGH

Trust: 0.6

cna@vuldb.com: CVE-2025-7912
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-2025-009714
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-2025-17538
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-2025-7912
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-2025-009714
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-2025-17538 // JVNDB: JVNDB-2025-009714 // NVD: CVE-2025-7912

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-2025-009714 // NVD: CVE-2025-7912

EXTERNAL IDS

db:NVDid:CVE-2025-7912

Trust: 3.2

db:VULDBid:317027

Trust: 1.8

db:JVNDBid:JVNDB-2025-009714

Trust: 0.8

db:CNVDid:CNVD-2025-17538

Trust: 0.6

sources: CNVD: CNVD-2025-17538 // JVNDB: JVNDB-2025-009714 // NVD: CVE-2025-7912

REFERENCES

url:https://github.com/anduinbrian/public/blob/main/totolink%20t6/vuln/6.md

Trust: 2.4

url:https://github.com/anduinbrian/public/blob/main/totolink%20t6/vuln/6.md#poc

Trust: 1.8

url:https://vuldb.com/?id.317027

Trust: 1.8

url:https://vuldb.com/?submit.618655

Trust: 1.8

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

Trust: 1.8

url:https://vuldb.com/?ctiid.317027

Trust: 1.0

url:https://nvd.nist.gov/vuln/detail/cve-2025-7912

Trust: 0.8

sources: CNVD: CNVD-2025-17538 // JVNDB: JVNDB-2025-009714 // NVD: CVE-2025-7912

SOURCES

db:CNVDid:CNVD-2025-17538
db:JVNDBid:JVNDB-2025-009714
db:NVDid:CVE-2025-7912

LAST UPDATE DATE

2025-08-06T23:12:38.011000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2025-17538date:2025-08-05T00:00:00
db:JVNDBid:JVNDB-2025-009714date:2025-07-24T02:41:00
db:NVDid:CVE-2025-7912date:2025-07-23T16:07:45.960

SOURCES RELEASE DATE

db:CNVDid:CNVD-2025-17538date:2025-08-05T00:00:00
db:JVNDBid:JVNDB-2025-009714date:2025-07-24T00:00:00
db:NVDid:CVE-2025-7912date:2025-07-20T23:15:32.153