Details of VAR-202511-2355

ID

VAR-202511-2355

CVE

CVE-2025-65226

TITLE

Shenzhen Tenda Technology Co.,Ltd. of ac21 Classic buffer overflow vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2025-019952

DESCRIPTION

Shenzhen Tenda Technology Co.,Ltd. of ac21 Firmware has a classic buffer overflow vulnerability.Service operation interruption (DoS) It may be in a state. The Tenda AC21 is a dual-band gigabit wireless router from Tenda Technology, designed for high-speed home internet needs. It supports 802.11ac wave2 technology, with a dual-band concurrent speed of up to 2033Mbps, including 1733Mbps on the 5GHz band, meeting the demands of high-bandwidth applications such as 4K video and live streaming. The Tenda AC21 contains a buffer overflow vulnerability. This vulnerability stems from the fact that the deviceId parameter in the /goform/saveParentControlInfo file fails to properly validate the length of input data. Attackers can exploit this vulnerability to cause a denial-of-service attack

Trust: 1.26

sources: JVNDB: JVNDB-2025-019952 // CNVD: CNVD-2025-29423

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-29423

AFFECTED PRODUCTS

vendor:	tenda	model:	ac21	scope:	eq	version:	16.03.08.16	Trust: 1.0
vendor:	tenda	model:	ac21	scope:	eq	version:	ac21 firmware 16.03.08.16	Trust: 0.8
vendor:	tenda	model:	ac21	scope:	eq	version:	-	Trust: 0.8
vendor:	tenda	model:	ac21	scope:	-	version:	-	Trust: 0.8
vendor:	tenda	model:	ac21	scope:	eq	version:	v16.03.08.16	Trust: 0.6

sources: CNVD: CNVD-2025-29423 // JVNDB: JVNDB-2025-019952 // NVD: CVE-2025-65226

CVSS

SEVERITY

CVSSV2

CVSSV3

134c704f-9b21-4f2e-91b3-4a467353bcc0:	CVE-2025-65226
value:	MEDIUM
Trust: 1.0
OTHER:	JVNDB-2025-019952
value:	MEDIUM
Trust: 0.8
CNVD:	CNVD-2025-29423
value:	LOW
Trust: 0.6

CNVD:	CNVD-2025-29423
severity:	LOW
baseScore:	3.3
vectorString:	AV:A/AC:L/AU:N/C:N/I:N/A:P
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	6.5
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-2025-65226
baseSeverity:	MEDIUM
baseScore:	4.3
vectorString:	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	LOW
exploitabilityScore:	2.8
impactScore:	1.4
version:	3.1
Trust: 1.0
OTHER:	JVNDB-2025-019952
baseSeverity:	MEDIUM
baseScore:	4.3
vectorString:	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
attackVector:	ADJACENT NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	LOW
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: CNVD: CNVD-2025-29423 // JVNDB: JVNDB-2025-019952 // NVD: CVE-2025-65226

PROBLEMTYPE DATA

problemtype:	CWE-120	Trust: 1.0
problemtype:	Classic buffer overflow (CWE-120) [ others ]	Trust: 0.8

sources: JVNDB: JVNDB-2025-019952 // NVD: CVE-2025-65226

EXTERNAL IDS

db:	NVD	id:	CVE-2025-65226	Trust: 3.2
db:	JVNDB	id:	JVNDB-2025-019952	Trust: 0.8
db:	CNVD	id:	CNVD-2025-29423	Trust: 0.6

sources: CNVD: CNVD-2025-29423 // JVNDB: JVNDB-2025-019952 // NVD: CVE-2025-65226

REFERENCES

url:	https://github.com/madgeaaaaa/my_vuln_2/blob/main/tenda/vuln5.md	Trust: 2.4
url:	https://nvd.nist.gov/vuln/detail/cve-2025-65226	Trust: 0.8

sources: CNVD: CNVD-2025-29423 // JVNDB: JVNDB-2025-019952 // NVD: CVE-2025-65226

SOURCES

db:	CNVD	id:	CNVD-2025-29423
db:	JVNDB	id:	JVNDB-2025-019952
db:	NVD	id:	CVE-2025-65226

LAST UPDATE DATE

2025-11-28T23:14:47.418000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2025-29423	date:	2025-11-27T00:00:00
db:	JVNDB	id:	JVNDB-2025-019952	date:	2025-11-26T02:32:00
db:	NVD	id:	CVE-2025-65226	date:	2025-11-21T17:24:54.497

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2025-29423	date:	2025-11-26T00:00:00
db:	JVNDB	id:	JVNDB-2025-019952	date:	2025-11-26T00:00:00
db:	NVD	id:	CVE-2025-65226	date:	2025-11-20T15:17:40.577