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

Severity: medium (CVSS 5.1 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-16 · updated 2026-06-17
Weakness: CWE-312

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.

Affected products

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

References

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

Get alerted when CVE-2025-53758 or the next vulnerability affects your stack