Details of VAR-202404-2904

ID

VAR-202404-2904

CVE

CVE-2024-31809

TITLE

TOTOLINK of EX200 Firmware special element sanitization vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2024-020598

DESCRIPTION

TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a remote code execution (RCE) vulnerability via the FileName parameter in the setUpgradeFW function. TOTOLINK of EX200 The firmware contains a special element sanitization vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK EX200 is a wireless N range extender developed by China's TOTOLINK Electronics. It is primarily used to extend the coverage of existing Wi-Fi networks and resolve signal dead zones. An attacker could exploit this vulnerability to execute arbitrary code

Trust: 2.16

sources: NVD: CVE-2024-31809 // JVNDB: JVNDB-2024-020598 // CNVD: CNVD-2025-17944

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-17944

AFFECTED PRODUCTS

vendor:	totolink	model:	ex200	scope:	eq	version:	4.0.3c.7646_b20201211	Trust: 1.0
vendor:	totolink	model:	ex200	scope:	eq	version:	-	Trust: 0.8
vendor:	totolink	model:	ex200	scope:	eq	version:	ex200 firmware 4.0.3c.7646 b20201211	Trust: 0.8
vendor:	totolink	model:	ex200	scope:	-	version:	-	Trust: 0.8
vendor:	totolink	model:	ex200 v4.0.3c.7646 b20201211	scope:	-	version:	-	Trust: 0.6

sources: CNVD: CNVD-2025-17944 // JVNDB: JVNDB-2024-020598 // NVD: CVE-2024-31809

CVSS

SEVERITY

CVSSV2

CVSSV3

134c704f-9b21-4f2e-91b3-4a467353bcc0:	CVE-2024-31809
value:	HIGH
Trust: 1.0
OTHER:	JVNDB-2024-020598
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2025-17944
value:	HIGH
Trust: 0.6

CNVD:	CNVD-2025-17944
severity:	HIGH
baseScore:	8.3
vectorString:	AV:A/AC:L/AU:N/C:C/I:C/A:C
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	6.5
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

134c704f-9b21-4f2e-91b3-4a467353bcc0:	CVE-2024-31809
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.1
Trust: 1.0
OTHER:	JVNDB-2024-020598
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT 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-2025-17944 // JVNDB: JVNDB-2024-020598 // NVD: CVE-2024-31809

PROBLEMTYPE DATA

problemtype:	CWE-75	Trust: 1.0
problemtype:	Inappropriate sanitizing of special elements (CWE-75) [ others ]	Trust: 0.8

sources: JVNDB: JVNDB-2024-020598 // NVD: CVE-2024-31809

PATCH

title:

Patch for TOTOLINK EX200 setUpgradeFW method code execution vulnerability

url:

https://www.cnvd.org.cn/patchInfo/show/717046

Trust: 0.6

sources: CNVD: CNVD-2025-17944

EXTERNAL IDS

db:	NVD	id:	CVE-2024-31809	Trust: 3.2
db:	JVNDB	id:	JVNDB-2024-020598	Trust: 0.8
db:	CNVD	id:	CNVD-2025-17944	Trust: 0.6

sources: CNVD: CNVD-2025-17944 // JVNDB: JVNDB-2024-020598 // NVD: CVE-2024-31809

REFERENCES

url:	https://github.com/4hsien/cve-vulns/blob/main/totolink/ex200/ci_4_setupgradefw/ci.md	Trust: 2.4
url:	https://nvd.nist.gov/vuln/detail/cve-2024-31809	Trust: 0.8

sources: CNVD: CNVD-2025-17944 // JVNDB: JVNDB-2024-020598 // NVD: CVE-2024-31809

SOURCES

db:	CNVD	id:	CNVD-2025-17944
db:	JVNDB	id:	JVNDB-2024-020598
db:	NVD	id:	CVE-2024-31809

LAST UPDATE DATE

2025-08-10T23:37:12.633000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2025-17944	date:	2025-08-08T00:00:00
db:	JVNDB	id:	JVNDB-2024-020598	date:	2025-03-19T02:35:00
db:	NVD	id:	CVE-2024-31809	date:	2025-03-18T16:03:53.180

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2025-17944	date:	2025-08-08T00:00:00
db:	JVNDB	id:	JVNDB-2024-020598	date:	2025-03-19T00:00:00
db:	NVD	id:	CVE-2024-31809	date:	2024-04-08T13:15:08.700