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ID

VAR-202509-0172


CVE

CVE-2025-9938


TITLE

D-Link Corporation  of  di-8400  Buffer error vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2025-014931

DESCRIPTION

A weakness has been identified in D-Link DI-8400 16.07.26A1. The affected element is the function yyxz_dlink_asp of the file /yyxz.asp. This manipulation of the argument ID causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be exploited. D-Link Corporation of di-8400 The firmware contains a buffer error vulnerability, a stack-based buffer overflow vulnerability, and an out-of-bounds write vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The D-Link DI-8400 is an enterprise-grade router for managing internet access in medium to large enterprise network environments, launched by D-Link. Attackers could exploit this vulnerability to cause arbitrary code execution, unauthorized device control, sensitive information theft, or denial-of-service attacks

Trust: 2.16

sources: NVD: CVE-2025-9938 // JVNDB: JVNDB-2025-014931 // CNVD: CNVD-2025-25750

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2025-25750

AFFECTED PRODUCTS

vendor:dlinkmodel:di-8400scope:eqversion:16.07.26a1

Trust: 1.0

vendor:d linkmodel:di-8400scope:eqversion: -

Trust: 0.8

vendor:d linkmodel:di-8400scope: - version: -

Trust: 0.8

vendor:d linkmodel:di-8400scope:eqversion:di-8400 firmware 16.07.26a1

Trust: 0.8

vendor:d linkmodel:d-link di-8400 16.07.26a1scope: - version: -

Trust: 0.6

sources: CNVD: CNVD-2025-25750 // JVNDB: JVNDB-2025-014931 // NVD: CVE-2025-9938

CVSS

SEVERITY

CVSSV2

CVSSV3

cna@vuldb.com: CVE-2025-9938
value: HIGH

Trust: 1.0

OTHER: JVNDB-2025-014931
value: HIGH

Trust: 0.8

CNVD: CNVD-2025-25750
value: HIGH

Trust: 0.6

cna@vuldb.com: CVE-2025-9938
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-2025-014931
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-2025-25750
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-2025-9938
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-2025-014931
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-2025-25750 // JVNDB: JVNDB-2025-014931 // NVD: CVE-2025-9938

PROBLEMTYPE DATA

problemtype:CWE-787

Trust: 1.0

problemtype:CWE-121

Trust: 1.0

problemtype:CWE-119

Trust: 1.0

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

Trust: 0.8

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

Trust: 0.8

problemtype: Out-of-bounds writing (CWE-787) [NVD evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2025-014931 // NVD: CVE-2025-9938

EXTERNAL IDS

db:NVDid:CVE-2025-9938

Trust: 3.2

db:VULDBid:322340

Trust: 1.8

db:JVNDBid:JVNDB-2025-014931

Trust: 0.8

db:CNVDid:CNVD-2025-25750

Trust: 0.6

sources: CNVD: CNVD-2025-25750 // JVNDB: JVNDB-2025-014931 // NVD: CVE-2025-9938

REFERENCES

url:https://github.com/zz2266/.github.io/tree/main/dlink/di-8400/yyxz.asp

Trust: 1.8

url:https://github.com/zz2266/.github.io/tree/main/dlink/di-8400/yyxz.asp#proof-of-concept-poc

Trust: 1.8

url:https://vuldb.com/?id.322340

Trust: 1.8

url:https://vuldb.com/?submit.643446

Trust: 1.8

url:https://www.dlink.com/

Trust: 1.8

url:https://nvd.nist.gov/vuln/detail/cve-2025-9938

Trust: 1.4

url:https://vuldb.com/?ctiid.322340

Trust: 1.0

sources: CNVD: CNVD-2025-25750 // JVNDB: JVNDB-2025-014931 // NVD: CVE-2025-9938

SOURCES

db:CNVDid:CNVD-2025-25750
db:JVNDBid:JVNDB-2025-014931
db:NVDid:CVE-2025-9938

LAST UPDATE DATE

2025-11-19T23:17:54.110000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2025-25750date:2025-10-30T00:00:00
db:JVNDBid:JVNDB-2025-014931date:2025-10-02T09:09:00
db:NVDid:CVE-2025-9938date:2025-09-29T18:30:16.607

SOURCES RELEASE DATE

db:CNVDid:CNVD-2025-25750date:2025-10-30T00:00:00
db:JVNDBid:JVNDB-2025-014931date:2025-10-02T00:00:00
db:NVDid:CVE-2025-9938date:2025-09-04T10:42:38.270