Digisol DG-GR6821AC XPON ONU Wi-Fi Router 3.2.x System Configuration hard-coded credentials

Summaryinfo

A vulnerability, which was classified as critical, has been found in Digisol DG-GR6821AC XPON ONU Wi-Fi Router 3.2.x. The affected element is an unknown function of the component System Configuration Handler. This manipulation causes hard-coded credentials. This vulnerability is tracked as CVE-2025-53754. It is feasible to perform the attack on the physical device. No exploit exists.

Detailsinfo

A vulnerability has been found in Digisol DG-GR6821AC XPON ONU Wi-Fi Router 3.2.x and classified as critical. Affected by this vulnerability is an unknown functionality of the component System Configuration Handler. The manipulation with an unknown input leads to a hard-coded credentials vulnerability. The CWE definition for the vulnerability is CWE-798. The product contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

This vulnerability exists in Digisol DG-GR6821AC Router due to hard-coded Root Access Credentials in system configuration of the device firmware. An attacker with physical access could exploit this vulnerability by extracting the firmware and analyzing the binary data to obtain the stored root access credentials. Successful exploitation of this vulnerability could allow the attacker to gain admin access to the targeted device.

The weakness was disclosed by Shravan Singh as CIVN-2025-0147. The advisory is shared at cert-in.org.in. This vulnerability is known as CVE-2025-53754 since 07/09/2025. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1110.001 for this issue.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-21645). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Router Operating System

Vendor

• Digisol

Name

• DG-GR6821AC XPON ONU Wi-Fi Router

Version

• 3.2.x

CPE 2.3info

• 🔒

CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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