Details of VAR-202308-3331

ID

VAR-202308-3331

CVE

CVE-2023-40799

TITLE

Shenzhen Tenda Technology Co.,Ltd. of ac23 Out-of-bounds write vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2023-022685

DESCRIPTION

Tenda AC23 Vv16.03.07.45_cn is vulnerable to Buffer Overflow via sub_450A4C function. Shenzhen Tenda Technology Co.,Ltd. of ac23 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 AC23 is a dual-band wireless router for home use launched by Tenda, designed for large homes with high-speed transmission. It supports 802.11ac Wave2 technology and boasts a maximum concurrent dual-band speed of 2033Mbps. This vulnerability stems from the sub_450A4C function failing to properly validate the length of input data. Attackers could exploit this vulnerability to execute arbitrary code or cause a denial-of-service attack

Trust: 2.25

sources: NVD: CVE-2023-40799 // JVNDB: JVNDB-2023-022685 // CNVD: CNVD-2025-27895 // VULMON: CVE-2023-40799

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-27895

AFFECTED PRODUCTS

vendor:	tenda	model:	ac23	scope:	eq	version:	16.03.07.45_cn	Trust: 1.0
vendor:	tenda	model:	ac23	scope:	eq	version:	-	Trust: 0.8
vendor:	tenda	model:	ac23	scope:	eq	version:	ac23 firmware 16.03.07.45 cn	Trust: 0.8
vendor:	tenda	model:	ac23	scope:	-	version:	-	Trust: 0.8
vendor:	tenda	model:	ac23 16.03.07.45 cn	scope:	-	version:	-	Trust: 0.6

sources: CNVD: CNVD-2025-27895 // JVNDB: JVNDB-2023-022685 // NVD: CVE-2023-40799

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2023-40799
value:	CRITICAL
Trust: 1.0
NVD:	CVE-2023-40799
value:	CRITICAL
Trust: 0.8
CNVD:	CNVD-2025-27895
value:	HIGH
Trust: 0.6

CNVD:	CNVD-2025-27895
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-2023-40799
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: 1.0
NVD:	CVE-2023-40799
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-2025-27895 // JVNDB: JVNDB-2023-022685 // NVD: CVE-2023-40799

PROBLEMTYPE DATA

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

sources: JVNDB: JVNDB-2023-022685 // NVD: CVE-2023-40799

EXTERNAL IDS

db:	NVD	id:	CVE-2023-40799	Trust: 3.3
db:	JVNDB	id:	JVNDB-2023-022685	Trust: 0.8
db:	CNVD	id:	CNVD-2025-27895	Trust: 0.6
db:	VULMON	id:	CVE-2023-40799	Trust: 0.1

sources: CNVD: CNVD-2025-27895 // VULMON: CVE-2023-40799 // JVNDB: JVNDB-2023-022685 // NVD: CVE-2023-40799

REFERENCES

url:	https://github.com/lst-oss/vulnerability/blob/main/tenda/ac23/sub_450a4c	Trust: 2.5
url:	https://nvd.nist.gov/vuln/detail/cve-2023-40799	Trust: 0.8
url:	https://nvd.nist.gov	Trust: 0.1

sources: CNVD: CNVD-2025-27895 // VULMON: CVE-2023-40799 // JVNDB: JVNDB-2023-022685 // NVD: CVE-2023-40799

SOURCES

db:	CNVD	id:	CNVD-2025-27895
db:	VULMON	id:	CVE-2023-40799
db:	JVNDB	id:	JVNDB-2023-022685
db:	NVD	id:	CVE-2023-40799

LAST UPDATE DATE

2025-11-19T23:25:04.637000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2025-27895	date:	2025-11-14T00:00:00
db:	VULMON	id:	CVE-2023-40799	date:	2023-08-25T00:00:00
db:	JVNDB	id:	JVNDB-2023-022685	date:	2024-01-24T01:32:00
db:	NVD	id:	CVE-2023-40799	date:	2023-08-29T16:05:17.997

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2025-27895	date:	2025-11-14T00:00:00
db:	VULMON	id:	CVE-2023-40799	date:	2023-08-25T00:00:00
db:	JVNDB	id:	JVNDB-2023-022685	date:	2024-01-24T00:00:00
db:	NVD	id:	CVE-2023-40799	date:	2023-08-25T15:15:09.307