CVE-2020-8861
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 allows network-adjacent attackers to bypass authentication on affected installations of D-Link DAP-1330 1.10B01 BETA Wi-Fi range extenders. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue results from the lack of proper handling of cookies. An attacker can leverage this vulnerability to execute arbitrary code on the router. Was ZDI-CAN-9554.
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 confidenceThis vulnerability allows network-adjacent attackers to bypass authentication on D-Link DAP-1330 1.10B01 BETA Wi-Fi range extenders. The flaw exists in HNAP login request handling due to improper cookie validation, enabling unauthenticated attackers to potentially execute arbitrary code on the device.
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< 1.10b01= 1.10b01CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/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 D-Link DAP-1330 device on your networkAccess your router or network scanner to list connected devices and look for a device with manufacturer D-Link and model DAP-1330, or check your network infrastructure for an IP address assigned to a D-Link DAP-1330 extender.Affected if The device is a D-Link DAP-1330 Wi-Fi range extender.
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Check the firmware versionLog into the DAP-1330 web management interface (typically at its IP address) and navigate to the Status or Management section to view the firmware version. The version is usually displayed on the main status page.Affected if The firmware version is 1.10B01 or any version lower than 1.10B01.
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Verify HNAP is enabledAccess the web management interface and look for HNAP (Home Network Administration Protocol) settings under the Administration, Management, or Advanced settings section. Check if the HNAP feature is turned on or accessible.Affected if HNAP is enabled on the device.
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Confirm web interface is network-accessibleAttempt to access the device's web interface from a computer on the same network by entering the device's IP address in a web browser. Verify the login page loads successfully.Affected if The HTTP/HTTPS management interface is accessible from the network.
You are affected if you have a D-Link DAP-1330 device running firmware version 1.10B01 or lower with HNAP enabled and its web management interface accessible on your network.
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 data1.10b01
Apply vendor firmware updates when available. Until a patch is released, restrict network access to the extender to trusted users only to reduce attack surface.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-8861 — 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-2020-8861 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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