Vulnerability · Published Jul 16, 2025 · Assigned by CERT-In

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

Medium 5.1

In plain English

A medium-severity security flaw in XPON ONU Wi-Fi Router (DG-GR6821AC) from Digisol. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.1%top 96.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
Digisol	XPON ONU Wi-Fi Router (DG-GR6821AC)	V3.2.XX

Weakness: CWE-312 · 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

References

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