VDB-321326 · CVE-2025-44178 · GCVE-0-2025-44178

DASAN GPON ONU H660WM H660WMR210825 UPnP Protocol WAN access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1	$0-$5k	0.15

Summaryinfo

A vulnerability described as critical has been identified in DASAN GPON ONU H660WM H660WMR210825. Impacted is an unknown function of the component UPnP Protocol WAN Handler. Such manipulation leads to access control. This vulnerability is documented as CVE-2025-44178. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in DASAN GPON ONU H660WM H660WMR210825. It has been rated as critical. Affected by this issue is an unknown code block of the component UPnP Protocol WAN Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

DASAN GPON ONU H660WM H660WMR210825 is susceptible to improper access control under its default settings. Attackers can exploit this vulnerability to gain unauthorized access to sensitive information and modify its configuration via the UPnP protocol WAN sides without any authentication.

The advisory is available at gist.github.com. This vulnerability is handled as CVE-2025-44178 since 04/22/2025. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/25/2025). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

DASAN

Name

GPON ONU H660WM

Version

H660WMR210825

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/22/2025 CVE reserved
08/25/2025 +125 days Advisory disclosed
08/25/2025 +0 days VulDB entry created
08/25/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2025-44178 (🔒)
GCVE (CVE): GCVE-0-2025-44178
GCVE (VulDB): GCVE-100-321326

Entryinfo

Created: 08/25/2025 16:46
Changes: 08/25/2025 16:46 (53)
Complete: 🔍
Cache ID: 216::103