CVE-2025-44178Public exploitNetwork attack vector

Unauthenticated data access via WAN-side UPnP

Published Aug 25, 2025 · Updated Aug 25, 2025

Improper access control in DASAN GPON ONU H660WM H660WMR210825 allows remote attackers to read data and modify settings via WAN-side UPnP. Under the default configuration, the WAN-side UPnP service processes requests for sensitive information and configuration changes without authenticating the requester. No account or user interaction is required, and the documented impact is limited to information exposure and device-configuration modification.

CVSS severity6.5
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in DASAN GPON ONU H660WM H660WMR210825 allows remote attackers to read data and modify settings via WAN-side UPnP. Under the default configuration, the WAN-side UPnP service processes requests for sensitive information and configuration changes without authenticating the requester. No account or user interaction is required, and the documented impact is limited to information exposure and device-configuration modification.

The record

CVE
CVE-2025-44178
Published
Aug 25, 2025
Updated
Aug 25, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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