Details of VAR-202508-0143

ID

VAR-202508-0143

CVE

CVE-2025-8640

TITLE

JVCKENWOOD Corporation of DMX958XR in the firmware OS Command injection vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2025-011085

DESCRIPTION

Kenwood DMX958XR Firmware Update Command Injection Vulnerability. This vulnerability allows physically present attackers to execute arbitrary code on affected installations of Kenwood DMX958XR devices. Authentication is not required to exploit this vulnerability. The specific flaw exists within the firmware update process. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-26263. JVCKENWOOD Corporation of DMX958XR The firmware has OS A command injection vulnerability exists.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The Kenwood DMX958XR is an in-vehicle infotainment system from Kenwood

Trust: 2.79

sources: NVD: CVE-2025-8640 // JVNDB: JVNDB-2025-011085 // ZDI: ZDI-25-788 // CNVD: CNVD-2025-20420

IOT TAXONOMY

category:

['IoT']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2025-20420

AFFECTED PRODUCTS

vendor:	jvckenwood	model:	dmx958xr	scope:	eq	version:	1.0.0005.4600	Trust: 1.0
vendor:	jvckenwood	model:	dmx958xr	scope:	-	version:	-	Trust: 0.8
vendor:	jvckenwood	model:	dmx958xr	scope:	eq	version:	-	Trust: 0.8
vendor:	jvckenwood	model:	dmx958xr	scope:	eq	version:	dmx958xr firmware 1.0.0005.4600	Trust: 0.8
vendor:	kenwood	model:	dmx958xr	scope:	-	version:	-	Trust: 0.7
vendor:	kenwood	model:	dmx958xr	scope:	eq	version:	1.0.0005.4600	Trust: 0.6

sources: ZDI: ZDI-25-788 // CNVD: CNVD-2025-20420 // JVNDB: JVNDB-2025-011085 // NVD: CVE-2025-8640

CVSS

SEVERITY

CVSSV2

CVSSV3

zdi-disclosures@trendmicro.com:	CVE-2025-8640
value:	MEDIUM
Trust: 1.0
OTHER:	JVNDB-2025-011085
value:	MEDIUM
Trust: 0.8
ZDI:	CVE-2025-8640
value:	MEDIUM
Trust: 0.7
CNVD:	CNVD-2025-20420
value:	HIGH
Trust: 0.6

CNVD:	CNVD-2025-20420
severity:	HIGH
baseScore:	7.2
vectorString:	AV:L/AC:L/AU:N/C:C/I:C/A:C
accessVector:	LOCAL
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	3.9
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

zdi-disclosures@trendmicro.com:	CVE-2025-8640
baseSeverity:	MEDIUM
baseScore:	6.8
vectorString:	CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	PHYSICAL
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	0.9
impactScore:	5.9
version:	3.0
Trust: 1.0
OTHER:	JVNDB-2025-011085
baseSeverity:	MEDIUM
baseScore:	6.8
vectorString:	CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	PHYSICAL
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8
ZDI:	CVE-2025-8640
baseSeverity:	MEDIUM
baseScore:	6.8
vectorString:	AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	PHYSICAL
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	0.9
impactScore:	5.9
version:	3.0
Trust: 0.7

sources: ZDI: ZDI-25-788 // CNVD: CNVD-2025-20420 // JVNDB: JVNDB-2025-011085 // NVD: CVE-2025-8640

PROBLEMTYPE DATA

problemtype:	CWE-78	Trust: 1.0
problemtype:	OS Command injection (CWE-78) [ others ]	Trust: 0.8

sources: JVNDB: JVNDB-2025-011085 // NVD: CVE-2025-8640

EXTERNAL IDS

db:	NVD	id:	CVE-2025-8640	Trust: 3.9
db:	ZDI	id:	ZDI-25-788	Trust: 2.5
db:	JVNDB	id:	JVNDB-2025-011085	Trust: 0.8
db:	ZDI_CAN	id:	ZDI-CAN-26263	Trust: 0.7
db:	CNVD	id:	CNVD-2025-20420	Trust: 0.6

sources: ZDI: ZDI-25-788 // CNVD: CNVD-2025-20420 // JVNDB: JVNDB-2025-011085 // NVD: CVE-2025-8640

REFERENCES

url:	https://www.zerodayinitiative.com/advisories/zdi-25-788/	Trust: 1.8
url:	https://nvd.nist.gov/vuln/detail/cve-2025-8640	Trust: 1.4

sources: CNVD: CNVD-2025-20420 // JVNDB: JVNDB-2025-011085 // NVD: CVE-2025-8640

CREDITS

@ByteInsight

Trust: 0.7

sources: ZDI: ZDI-25-788

SOURCES

db:	ZDI	id:	ZDI-25-788
db:	CNVD	id:	CNVD-2025-20420
db:	JVNDB	id:	JVNDB-2025-011085
db:	NVD	id:	CVE-2025-8640

LAST UPDATE DATE

2025-09-08T23:25:57.595000+00:00

SOURCES UPDATE DATE

db:	ZDI	id:	ZDI-25-788	date:	2025-08-05T00:00:00
db:	CNVD	id:	CNVD-2025-20420	date:	2025-09-05T00:00:00
db:	JVNDB	id:	JVNDB-2025-011085	date:	2025-08-08T09:01:00
db:	NVD	id:	CVE-2025-8640	date:	2025-08-07T16:54:00.050

SOURCES RELEASE DATE

db:	ZDI	id:	ZDI-25-788	date:	2025-08-05T00:00:00
db:	CNVD	id:	CNVD-2025-20420	date:	2025-09-05T00:00:00
db:	JVNDB	id:	JVNDB-2025-011085	date:	2025-08-08T00:00:00
db:	NVD	id:	CVE-2025-8640	date:	2025-08-06T02:15:52.193