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ID

VAR-202507-2414


CVE

CVE-2025-7796


TITLE

Shenzhen Tenda Technology Co.,Ltd.  of  fh451  Buffer error vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2025-009757

DESCRIPTION

A vulnerability, which was classified as critical, was found in Tenda FH451 1.0.0.9. This affects the function fromPptpUserAdd of the file /goform/PPTPDClient. The manipulation of the argument Username leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Shenzhen Tenda Technology Co.,Ltd. of fh451 The firmware contains a buffer error vulnerability and a stack-based buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. Tenda FH451 is a single-frequency 2.4GHz SOHO wireless router launched by China's Tenda Company. It has a maximum transmission rate of 450Mbps and belongs to the wall-penetrating king series of products. The vulnerability is caused by the parameter Username in the file /goform/PPTPDClient failing to correctly 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-2025-7796 // JVNDB: JVNDB-2025-009757 // CNVD: CNVD-2025-16815

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2025-16815

AFFECTED PRODUCTS

vendor:tendamodel:fh451scope:eqversion:1.0.0.9

Trust: 1.6

vendor:tendamodel:fh451scope:eqversion:fh451 firmware 1.0.0.9

Trust: 0.8

vendor:tendamodel:fh451scope:eqversion: -

Trust: 0.8

vendor:tendamodel:fh451scope: - version: -

Trust: 0.8

sources: CNVD: CNVD-2025-16815 // JVNDB: JVNDB-2025-009757 // NVD: CVE-2025-7796

CVSS

SEVERITY

CVSSV2

CVSSV3

cna@vuldb.com: CVE-2025-7796
value: HIGH

Trust: 1.0

OTHER: JVNDB-2025-009757
value: HIGH

Trust: 0.8

CNVD: CNVD-2025-16815
value: HIGH

Trust: 0.6

cna@vuldb.com: CVE-2025-7796
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-2025-009757
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-2025-16815
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-2025-7796
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-2025-009757
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-2025-16815 // JVNDB: JVNDB-2025-009757 // NVD: CVE-2025-7796

PROBLEMTYPE DATA

problemtype:CWE-119

Trust: 1.0

problemtype:CWE-121

Trust: 1.0

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

Trust: 0.8

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

Trust: 0.8

sources: JVNDB: JVNDB-2025-009757 // NVD: CVE-2025-7796

EXTERNAL IDS

db:NVDid:CVE-2025-7796

Trust: 3.2

db:VULDBid:316857

Trust: 1.8

db:JVNDBid:JVNDB-2025-009757

Trust: 0.8

db:CNVDid:CNVD-2025-16815

Trust: 0.6

sources: CNVD: CNVD-2025-16815 // JVNDB: JVNDB-2025-009757 // NVD: CVE-2025-7796

REFERENCES

url:https://github.com/panda666-888/vuls/blob/main/tenda/fh451/frompptpuseradd.md

Trust: 2.4

url:https://github.com/panda666-888/vuls/blob/main/tenda/fh451/frompptpuseradd.md#poc

Trust: 1.8

url:https://vuldb.com/?id.316857

Trust: 1.8

url:https://vuldb.com/?submit.616345

Trust: 1.8

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

Trust: 1.8

url:https://vuldb.com/?ctiid.316857

Trust: 1.0

url:https://nvd.nist.gov/vuln/detail/cve-2025-7796

Trust: 0.8

sources: CNVD: CNVD-2025-16815 // JVNDB: JVNDB-2025-009757 // NVD: CVE-2025-7796

SOURCES

db:CNVDid:CNVD-2025-16815
db:JVNDBid:JVNDB-2025-009757
db:NVDid:CVE-2025-7796

LAST UPDATE DATE

2025-07-28T23:32:34.637000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2025-16815date:2025-07-25T00:00:00
db:JVNDBid:JVNDB-2025-009757date:2025-07-24T06:58:00
db:NVDid:CVE-2025-7796date:2025-07-23T16:39:49.323

SOURCES RELEASE DATE

db:CNVDid:CNVD-2025-16815date:2025-07-25T00:00:00
db:JVNDBid:JVNDB-2025-009757date:2025-07-24T00:00:00
db:NVDid:CVE-2025-7796date:2025-07-18T18:15:25.173