CVE-2026-30702
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 · uneditedThe WiFi Extender WDR201A (HW V2.1, FW LFMZX28040922V1.02) implements a broken authentication mechanism in its web management interface. The login page does not properly enforce session validation, allowing attackers to bypass authentication by directly accessing restricted web application endpoints through forced browsing
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 WiFi Extender WDR201A firmware LFMZX28040922V1.02 contains a broken authentication mechanism where the web management interface login page fails to properly enforce session validation. Attackers can bypass authentication entirely through forced browsing by directly accessing restricted web application endpoints without obtaining a valid session token.
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
- 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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Confirm device model is WDR201ACheck the device label, management interface, or SNMP inventory for the model number WDR201A WiFi ExtenderAffected if The device is a WDR201A WiFi Extender
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Identify installed firmware versionLog into the web management interface and look for a firmware version string in the system status or settings page, or check via device console/SSH if availableAffected if Firmware version is LFMZX28040922V1.02 or an earlier unpatched release
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Verify web management interface is enabledAttempt to reach the device IP via HTTP/HTTPS on common management ports (80, 443, 8080) or check the administrative settings for web interface statusAffected if The web management interface is accessible on the network
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Test for forced browsing authentication bypassUsing a browser or HTTP client, attempt to directly access a restricted endpoint (such as /admin, /status, /cfg, or similar) without logging in or providing any session tokenAffected if Restricted pages or device configuration can be viewed or manipulated without authentication
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Check for session token validationInspect HTTP requests and responses when logging in; note whether the server validates session cookies on subsequent restricted page requestsAffected if The server accepts requests to restricted endpoints without valid session tokens or cookies
You are affected if the device is a WDR201A with firmware LFMZX28040922V1.02 and the web management interface allows direct access to restricted pages without authentication.
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 firmware patch if available; otherwise consider replacing the device with a model that receives active security support. If the device must remain in service, restrict network access to the management interface via ACLs or VLAN segmentation to reduce attack surface.
- Consultation4.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-30702 — 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-2026-30702 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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