CVE-2025-53754
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThis 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThe Digisol DG-GR6821AC router firmware contains hard-coded root credentials embedded in the system configuration. An attacker with physical access can extract the firmware image and perform binary analysis to discover these stored administrative credentials, then use them to authenticate to the device management interface.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Physical
- Complexity
- Low
- Privileges
- None
- Authentication
- X
- User interaction
- None
- Scope
- X
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the device modelCheck the device label, web interface (usually under Status or System info), or console boot logs for the exact model numberAffected if Model is Digisol DG-GR6821AC - all firmware versions of this specific router are affected by hard-coded credentials
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Check for firmware version informationAccess the router web management interface and look under Administration, System, or Status pages for the firmware version string; alternatively, check boot logs via serial consoleAffected if Running any firmware version on the DG-GR6821AC model since hard-coded credentials exist in the firmware image regardless of version
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Inspect firmware or configuration for embedded credentialsIf you have physical access, attempt to extract the firmware via UART/JTAG or download configuration backup; search binary/config files for strings resembling username 'root' or 'admin' paired with hard-coded password hashesAffected if Firmware or config files contain hard-coded root or administrative credentials that differ from user-defined passwords
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Test default or known credentials against management interfaceAttempt to log into the router web interface or telnet/SSH using common hard-coded credential patterns found in the firmwareAffected if Authentication succeeds with credentials embedded in the firmware rather than user-created passwords
If the device is a Digisol DG-GR6821AC router running any firmware version, and its firmware image contains embedded root credentials, the environment is affected by this CVE.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUsers should restrict physical access to affected devices and monitor for unauthorized access. The vendor should release firmware updates that remove hard-coded credentials and implement proper credential management.
- Consultation2.0 h
- Implementation1.0 h
- Testing1.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-53754 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-53754 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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