dbcve.org
Dir 2150 FirmwareOperating system · Dlink

CVE-2023-34282

HIGH · 8.8 CVSS v3.1 Published 2024-05-03
Fix available
A fix is available. Upgrade to 1.06 or later.
See remediation →
93/100
Remediation priority · Urgent
No privileges Zero-click

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 · unedited
D-Link DIR-2150 HNAP Incorrect Implementation of Authentication Algorithm Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-2150 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the SOAP API interface, which listens on TCP port 80 by default. A crafted authentication header can cause authentication to succeed without providing proper credentials. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-20910.

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 confidence

D-Link DIR-2150 routers contain an authentication bypass vulnerability in the HNAP (Home Network Administration Protocol) SOAP API service listening on TCP port 80. The flaw is in the authentication algorithm implementation, where specially crafted authentication headers can cause the authentication check to succeed without providing valid credentials, allowing unauthenticated attackers network-adjacent access to the router's administrative interface.

MitigationApply vendor firmware updates when available; otherwise, restrict network access to the router's web interface (TCP port 80) to trusted devices only, as exploitation requires adjacent network access.

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
Dir 2150 FirmwareOperating system
Affected:< 1.06

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
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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm router model is DIR-2150
    Access the router's web interface or check the device label/marketing to identify the exact model number
    Affected if Device is not a D-Link DIR-2150 unit
  2. Check firmware version
    Log into the router admin panel and navigate to the status or system information page to view the installed firmware version; compare against 1.06
    Affected if Firmware version is below 1.06
  3. Verify HNAP service is exposed
    Use a network scanner or telnet/nc to check if TCP port 80 is open and responding on the router's IP address; confirm the HNAP SOAP API endpoint is accessible
    Affected if HNAP service is accessible on port 80 from an untrusted network segment
  4. Confirm administrative access is possible without credentials
    Send a crafted request to the HNAP endpoint with invalid or missing authentication headers and observe if the response indicates successful authentication or grants access to admin functions
    Affected if Authentication bypass is confirmed to work without valid credentials

The environment is affected if it is a D-Link DIR-2150 router running firmware version below 1.06 with the HNAP SOAP API on port 80 exposed to an untrusted network.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Upgrade available Upgrade to 1.06 or later
Fixed in 1.06
Interim mitigation

Apply vendor firmware updates when available; otherwise, restrict network access to the router's web interface (TCP port 80) to trusted devices only, as exploitation requires adjacent network access.

Recommended fix Moderate confidence

DIR-2150 Firmware version 1.06 or later

  1. 1. Visit the official D-Link support website and navigate to the DIR-2150 product page.
  2. 2. Locate the firmware download section.
  3. 3. Download the latest firmware version (1.06 or later).
  4. 4. Access the router's web management interface by navigating to the router's IP address (typically 192.168.0.1).
  5. 5. Navigate to the Administration or System settings section.
  6. 6. Select the firmware upgrade option.
  7. 7. Upload the downloaded firmware file and initiate the upgrade.
  8. 8. Wait for the upgrade to complete and the router to reboot.
Caveat Firmware upgrades may reset router configuration to defaults; backup current settings before upgrading if possible

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Dir 2150 Firmware Scoped from the published advisory
  • Consultation6.0 h
  • Implementation40.0 h
  • Testing16.0 h
  • Review / QA8.0 h
70.0 hours of engineering $12,240
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-34282 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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  • No spam, self-promotion, credentials, or personal data