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

5.1MEDIUM

Key Information:

Vendor

Digisol

Status
Xpon Onu Wi-fi Router (dg-gr6821ac)
Vendor
CVE Published:
16 July 2025

What is CVE-2025-53758?

The Digisol DG-GR6821AC Router is vulnerable due to the use of default admin credentials within its web management interface. Attackers with physical access can exploit this vulnerability by extracting and reverse engineering the router's firmware to uncover hardcoded default credentials. This unauthorized access enables potential manipulation of the device, posing significant risks to network security. Users are advised to change default credentials and implement strong authentication measures to safeguard against this vulnerability.

Affected Version(s)

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

References

https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOT...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Physical
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This vulnerability is reported by Shravan Singh from Kavach IoT Security.
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CVE-2025-53758 : Default Credential Vulnerability in Digisol DG-GR6821AC Router