Details of VAR-202508-2563

ID

VAR-202508-2563

CVE

CVE-2025-29521

TITLE

D-Link Corporation of DSL-7740C Firmware default credential usage vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2025-012686

DESCRIPTION

Insecure default credentials for the Adminsitrator account of D-Link DSL-7740C with firmware DSL7740C.V6.TR069.20211230 allows attackers to escalate privileges via a bruteforce attack. D-Link Corporation of DSL-7740C The firmware contains a vulnerability related to the use of default credentials.Information may be obtained. The D-Link DSL-7740C is a modem manufactured by D-Link, a Chinese company

Trust: 2.16

sources: NVD: CVE-2025-29521 // JVNDB: JVNDB-2025-012686 // CNVD: CNVD-2025-19878

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-19878

AFFECTED PRODUCTS

vendor:	dlink	model:	dsl-7740c	scope:	eq	version:	6.tr069.20211230	Trust: 1.0
vendor:	d link	model:	dsl-7740c	scope:	-	version:	-	Trust: 0.8
vendor:	d link	model:	dsl-7740c	scope:	eq	version:	dsl-7740c firmware 6.tr069.20211230	Trust: 0.8
vendor:	d link	model:	dsl-7740c	scope:	eq	version:	-	Trust: 0.8
vendor:	d link	model:	dsl-7740c dsl7740c.v6.tr069.20211230	scope:	-	version:	-	Trust: 0.6

sources: CNVD: CNVD-2025-19878 // JVNDB: JVNDB-2025-012686 // NVD: CVE-2025-29521

CVSS

SEVERITY

CVSSV2

CVSSV3

134c704f-9b21-4f2e-91b3-4a467353bcc0:	CVE-2025-29521
value:	MEDIUM
Trust: 1.0
OTHER:	JVNDB-2025-012686
value:	MEDIUM
Trust: 0.8
CNVD:	CNVD-2025-19878
value:	MEDIUM
Trust: 0.6

CNVD:	CNVD-2025-19878
severity:	MEDIUM
baseScore:	5.0
vectorString:	AV:N/AC:L/AU:N/C:P/I:N/A:N
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	NONE
availabilityImpact:	NONE
exploitabilityScore:	10.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

134c704f-9b21-4f2e-91b3-4a467353bcc0:	CVE-2025-29521
baseSeverity:	MEDIUM
baseScore:	5.3
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	LOW
integrityImpact:	NONE
availabilityImpact:	NONE
exploitabilityScore:	3.9
impactScore:	1.4
version:	3.1
Trust: 1.0
OTHER:	JVNDB-2025-012686
baseSeverity:	MEDIUM
baseScore:	5.3
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	LOW
integrityImpact:	NONE
availabilityImpact:	NONE
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: CNVD: CNVD-2025-19878 // JVNDB: JVNDB-2025-012686 // NVD: CVE-2025-29521

PROBLEMTYPE DATA

problemtype:	CWE-1392	Trust: 1.0
problemtype:	Using default credentials (CWE-1392) [ others ]	Trust: 0.8

sources: JVNDB: JVNDB-2025-012686 // NVD: CVE-2025-29521

EXTERNAL IDS

db:	NVD	id:	CVE-2025-29521	Trust: 3.2
db:	JVNDB	id:	JVNDB-2025-012686	Trust: 0.8
db:	CNVD	id:	CNVD-2025-19878	Trust: 0.6

sources: CNVD: CNVD-2025-19878 // JVNDB: JVNDB-2025-012686 // NVD: CVE-2025-29521

REFERENCES

url:	https://gist.github.com/stevenyu113228/73f06459df5ac3257ff451e382497832	Trust: 1.8
url:	https://www.dlink.com/en/security-bulletin/	Trust: 1.8
url:	https://nvd.nist.gov/vuln/detail/cve-2025-29521	Trust: 1.4

sources: CNVD: CNVD-2025-19878 // JVNDB: JVNDB-2025-012686 // NVD: CVE-2025-29521

SOURCES

db:	CNVD	id:	CNVD-2025-19878
db:	JVNDB	id:	JVNDB-2025-012686
db:	NVD	id:	CVE-2025-29521

LAST UPDATE DATE

2025-09-07T23:15:05.180000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2025-19878	date:	2025-08-29T00:00:00
db:	JVNDB	id:	JVNDB-2025-012686	date:	2025-09-03T01:48:00
db:	NVD	id:	CVE-2025-29521	date:	2025-09-02T18:16:29.557

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2025-19878	date:	2025-08-29T00:00:00
db:	JVNDB	id:	JVNDB-2025-012686	date:	2025-09-03T00:00:00
db:	NVD	id:	CVE-2025-29521	date:	2025-08-25T15:15:38.263