Details of VAR-202306-0114

ID

VAR-202306-0114

CVE

CVE-2023-33670

TITLE

Shenzhen Tenda Technology Co.,Ltd. of AC8 Out-of-bounds write vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2023-007625

DESCRIPTION

Tenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the time parameter in the sub_4a79ec function. Shenzhen Tenda Technology Co.,Ltd. of AC8 An out-of-bounds write vulnerability exists in firmware.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The Tenda AC8 is a dual-band gigabit wireless router designed for homes with fiber optic connections up to 1000 Mbps. It supports dual-band concurrent transmission rates of up to 1167 Mbps and is equipped with full gigabit ports (one WAN port and three LAN ports), meeting broadband access needs between 100 and 1000 Mbps. An attacker could exploit this vulnerability to execute arbitrary code on the system or cause a denial of service

Trust: 2.25

sources: NVD: CVE-2023-33670 // JVNDB: JVNDB-2023-007625 // CNVD: CNVD-2025-20718 // VULMON: CVE-2023-33670

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-20718

AFFECTED PRODUCTS

vendor:	tenda	model:	ac8	scope:	eq	version:	16.03.34.06	Trust: 1.0
vendor:	tenda	model:	ac8	scope:	eq	version:	ac8 firmware 16.03.34.06	Trust: 0.8
vendor:	tenda	model:	ac8	scope:	-	version:	-	Trust: 0.8
vendor:	tenda	model:	ac8	scope:	eq	version:	-	Trust: 0.8
vendor:	tenda	model:	ac8v4	scope:	eq	version:	16.03.34.06	Trust: 0.6

sources: CNVD: CNVD-2025-20718 // JVNDB: JVNDB-2023-007625 // NVD: CVE-2023-33670

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2023-33670
value:	CRITICAL
Trust: 1.0
134c704f-9b21-4f2e-91b3-4a467353bcc0:	CVE-2023-33670
value:	CRITICAL
Trust: 1.0
NVD:	CVE-2023-33670
value:	CRITICAL
Trust: 0.8
CNVD:	CNVD-2025-20718
value:	HIGH
Trust: 0.6
CNNVD:	CNNVD-202306-141
value:	CRITICAL
Trust: 0.6

CNVD:	CNVD-2025-20718
severity:	HIGH
baseScore:	10.0
vectorString:	AV:N/AC:L/AU:N/C:C/I:C/A:C
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	10.0
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2023-33670
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	5.9
version:	3.1
Trust: 2.0
NVD:	CVE-2023-33670
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: CNVD: CNVD-2025-20718 // CNNVD: CNNVD-202306-141 // JVNDB: JVNDB-2023-007625 // NVD: CVE-2023-33670 // NVD: CVE-2023-33670

PROBLEMTYPE DATA

problemtype:	CWE-787	Trust: 1.0
problemtype:	Out-of-bounds writing (CWE-787) [NVD evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2023-007625 // NVD: CVE-2023-33670

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202306-141

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202306-141

EXTERNAL IDS

db:	NVD	id:	CVE-2023-33670	Trust: 3.9
db:	JVNDB	id:	JVNDB-2023-007625	Trust: 0.8
db:	CNVD	id:	CNVD-2025-20718	Trust: 0.6
db:	CNNVD	id:	CNNVD-202306-141	Trust: 0.6
db:	VULMON	id:	CVE-2023-33670	Trust: 0.1

sources: CNVD: CNVD-2025-20718 // VULMON: CVE-2023-33670 // CNNVD: CNNVD-202306-141 // JVNDB: JVNDB-2023-007625 // NVD: CVE-2023-33670

REFERENCES

url:	https://github.com/ddizzzy79/tenda-cve/blob/main/ac8v4.0/n3/readme.md	Trust: 3.1
url:	https://github.com/ddizzzy79/tenda-cve/tree/main/ac8v4.0/n3	Trust: 2.4
url:	https://nvd.nist.gov/vuln/detail/cve-2023-33670	Trust: 0.8
url:	https://cxsecurity.com/cveshow/cve-2023-33670/	Trust: 0.6
url:	https://nvd.nist.gov	Trust: 0.1

sources: CNVD: CNVD-2025-20718 // VULMON: CVE-2023-33670 // CNNVD: CNNVD-202306-141 // JVNDB: JVNDB-2023-007625 // NVD: CVE-2023-33670

SOURCES

db:	CNVD	id:	CNVD-2025-20718
db:	VULMON	id:	CVE-2023-33670
db:	CNNVD	id:	CNNVD-202306-141
db:	JVNDB	id:	JVNDB-2023-007625
db:	NVD	id:	CVE-2023-33670

LAST UPDATE DATE

2025-09-08T23:15:58.567000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2025-20718	date:	2025-09-05T00:00:00
db:	VULMON	id:	CVE-2023-33670	date:	2023-06-02T00:00:00
db:	CNNVD	id:	CNNVD-202306-141	date:	2023-06-13T00:00:00
db:	JVNDB	id:	JVNDB-2023-007625	date:	2023-11-24T08:09:00
db:	NVD	id:	CVE-2023-33670	date:	2025-01-08T21:15:09.780

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2025-20718	date:	2025-09-05T00:00:00
db:	VULMON	id:	CVE-2023-33670	date:	2023-06-02T00:00:00
db:	CNNVD	id:	CNNVD-202306-141	date:	2023-06-02T00:00:00
db:	JVNDB	id:	JVNDB-2023-007625	date:	2023-11-24T00:00:00
db:	NVD	id:	CVE-2023-33670	date:	2023-06-02T20:15:09.563