CVE-2023-41351
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 · uneditedChunghwa Telecom NOKIA G-040W-Q has a vulnerability of authentication bypass, which allows an unauthenticated remote attacker to bypass the authentication mechanism to log in to the device by an alternative URL. This makes it possible for unauthenticated remote attackers to log in as any existing users, such as an administrator, to perform arbitrary system operations or disrupt service.
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 · high confidenceThe Chunghwa Telecom NOKIA G-040W-Q router contains an authentication bypass vulnerability where an unauthenticated attacker can access the device management interface through an alternative URL path, bypassing the normal authentication mechanism. This enables the attacker to log in as any existing user (including administrator) and execute arbitrary system operations or cause service disruption.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= g040wqr201207CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 router modelLog into the router admin interface or check the device label/sticker to confirm the model is Nokia G-040W-Q (often branded for Chunghwa Telecom)Affected if Device model is Nokia G-040W-Q
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Check firmware versionNavigate to router administration page, typically under Status, System Info, or Firmware Version section. Look for a version string such as g040wqr201207Affected if Firmware version matches exactly g040wqr201207
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Verify management interface accessibilityAttempt to access the router management interface from an external network location (or verify firewall rules allow external access to HTTP/HTTPS ports 80/443 on the router's WAN IP)Affected if Management interface is reachable from untrusted networks without VPN or firewall filtering
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Test for alternative authentication pathIf the standard login page is at /, /login, or /admin, attempt accessing common alternative paths such as /cgi-bin/, /pon/, /xml/, or /action/ without providing credentials to see if authentication can be bypassedAffected if Any alternative URL path grants access to authenticated sections or user management functions without valid credentials
If the device is a Nokia G-040W-Q router running firmware g040wqr201207 and its management interface is exposed to untrusted networks, the environment is affected by this authentication bypass vulnerability.
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 dataApply vendor-provided firmware patches when available. Until a patch is released, restrict network access to the device management interface using firewall rules or network segmentation to prevent unauthorized external access.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2023-41351 — 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-2023-41351 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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- Version or environment caveats, and links to real fixes
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