Details of VAR-202308-3617

ID

VAR-202308-3617

CVE

CVE-2023-40839

TITLE

Tenda AC6 sub_ADF3C function command execution vulnerability

Trust: 0.6

sources: CNVD: CNVD-2025-21383

DESCRIPTION

Tenda AC6 US_AC6V1.0BR_V15.03.05.16_multi_TD01.bin function 'sub_ADF3C' contains a command execution vulnerability. In the "formSetIptv" function, obtaining the "list" and "vlanId" fields, unfiltered passing these two fields as parameters to the "sub_ADF3C" function to execute commands. The Tenda AC6 is a dual-band wireless router from Tenda. It supports both 2.4GHz and 5GHz bands, boasts a maximum transmission rate of 1167Mbps, and features dual-band integration. An attacker could exploit this vulnerability to execute arbitrary commands

Trust: 1.53

sources: NVD: CVE-2023-40839 // CNVD: CNVD-2025-21383 // VULMON: CVE-2023-40839

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-21383

AFFECTED PRODUCTS

vendor:	tenda	model:	ac6	scope:	eq	version:	15.03.05.16	Trust: 1.0
vendor:	tenda	model:	ac6 us ac6v1.0br v15.03.05.16 multi td01.bin	scope:	-	version:	-	Trust: 0.6

sources: CNVD: CNVD-2025-21383 // NVD: CVE-2023-40839

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2023-40839
value:	CRITICAL
Trust: 1.0
CNVD:	CNVD-2025-21383
value:	HIGH
Trust: 0.6

CNVD:	CNVD-2025-21383
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-2023-40839
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

sources: CNVD: CNVD-2025-21383 // NVD: CVE-2023-40839

PROBLEMTYPE DATA

problemtype:

CWE-78

Trust: 1.0

sources: NVD: CVE-2023-40839

PATCH

title:

Patch for Tenda AC6 sub_ADF3C function command execution vulnerability

url:

https://www.cnvd.org.cn/patchInfo/show/732211

Trust: 0.6

sources: CNVD: CNVD-2025-21383

EXTERNAL IDS

db:	NVD	id:	CVE-2023-40839	Trust: 1.7
db:	CNVD	id:	CNVD-2025-21383	Trust: 0.6
db:	VULMON	id:	CVE-2023-40839	Trust: 0.1

sources: CNVD: CNVD-2025-21383 // VULMON: CVE-2023-40839 // NVD: CVE-2023-40839

REFERENCES

url:	https://github.com/xyiym/digging/blob/main/tenda/ac6/cmd/3/3.md	Trust: 1.7
url:	https://nvd.nist.gov	Trust: 0.1

sources: CNVD: CNVD-2025-21383 // VULMON: CVE-2023-40839 // NVD: CVE-2023-40839

SOURCES

db:	CNVD	id:	CNVD-2025-21383
db:	VULMON	id:	CVE-2023-40839
db:	NVD	id:	CVE-2023-40839

LAST UPDATE DATE

2025-09-18T22:59:57.090000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2025-21383	date:	2025-09-17T00:00:00
db:	VULMON	id:	CVE-2023-40839	date:	2023-08-31T00:00:00
db:	NVD	id:	CVE-2023-40839	date:	2023-09-07T14:14:25.523

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2025-21383	date:	2025-09-15T00:00:00
db:	VULMON	id:	CVE-2023-40839	date:	2023-08-30T00:00:00
db:	NVD	id:	CVE-2023-40839	date:	2023-08-30T17:15:10.453