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ID

VAR-202603-1017


CVE

CVE-2026-3678


TITLE

Shenzhen Tenda Technology Co.,Ltd. of fh451  Multiple vulnerabilities in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2026-006561

DESCRIPTION

A vulnerability was determined in Tenda FH451 1.0.0.9. Affected is the function sub_3C434 of the file /goform/AdvSetWan. This manipulation of the argument wanmode/PPPOEPassword causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. An exploit for this vulnerability is publicly available and can be exploited in the wild.All information handled by the software may be leaked to the outside. All information handled by the software may be rewritten. Furthermore, the software may stop working completely. Furthermore, attacks that exploit this vulnerability will not affect other software

Trust: 1.62

sources: NVD: CVE-2026-3678 // JVNDB: JVNDB-2026-006561

AFFECTED PRODUCTS

vendor:tendamodel:fh451scope:eqversion:1.0.0.9

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vendor:tendamodel:fh451scope: - version: -

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vendor:tendamodel:fh451scope:eqversion: -

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vendor:tendamodel:fh451scope:eqversion:fh451 firmware 1.0.0.9

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sources: JVNDB: JVNDB-2026-006561 // NVD: CVE-2026-3678

CVSS

SEVERITY

CVSSV2

CVSSV3

cna@vuldb.com: CVE-2026-3678
value: HIGH

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OTHER: JVNDB-2026-006561
value: HIGH

Trust: 0.8

cna@vuldb.com: CVE-2026-3678
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-2026-006561
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

cna@vuldb.com: CVE-2026-3678
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-2026-006561
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: JVNDB: JVNDB-2026-006561 // NVD: CVE-2026-3678

PROBLEMTYPE DATA

problemtype:CWE-119

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problemtype:CWE-121

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

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problemtype: Stack-based buffer overflow (CWE-121) [ others ]

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sources: JVNDB: JVNDB-2026-006561 // NVD: CVE-2026-3678

PATCH

title:Tenda FH451 V1.0.0.9 Stack-based Buffer Overflowurl:https://vuldb.com/?id.349580

Trust: 0.8

sources: JVNDB: JVNDB-2026-006561

EXTERNAL IDS

db:NVDid:CVE-2026-3678

Trust: 2.6

db:VULDBid:349580

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db:JVNDBid:JVNDB-2026-006561

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sources: JVNDB: JVNDB-2026-006561 // NVD: CVE-2026-3678

REFERENCES

url:https://www.tenda.com.cn/

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url:https://github.com/litengzheng/vul_db/blob/main/fh451/vul_62/readme.md

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url:https://vuldb.com/?ctiid.349580

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url:https://vuldb.com/?submit.765330

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url:https://vuldb.com/?id.349580

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url:https://nvd.nist.gov/vuln/detail/cve-2026-3678

Trust: 0.8

sources: JVNDB: JVNDB-2026-006561 // NVD: CVE-2026-3678

SOURCES

db:JVNDBid:JVNDB-2026-006561
db:NVDid:CVE-2026-3678

LAST UPDATE DATE

2026-03-12T23:33:30.599000+00:00


SOURCES UPDATE DATE

db:JVNDBid:JVNDB-2026-006561date:2026-03-11T07:00:00
db:NVDid:CVE-2026-3678date:2026-03-09T16:16:21.987

SOURCES RELEASE DATE

db:JVNDBid:JVNDB-2026-006561date:2026-03-11T00:00:00
db:NVDid:CVE-2026-3678date:2026-03-07T23:15:46.520