dbcve.org
Dcs 932l FirmwareOperating system · Dlink

CVE-2021-41504

HIGH · 8.0 CVSS v3.1 Published 2021-09-24
Fix available
A fix is available. Upgrade to after 2.17 or later.
See remediation →
82/100
Remediation priority · High
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
An Elevated Privileges issue exists in D-Link DCS-5000L v1.05 and DCS-932L v2.17 and older. The use of the digest-authentication for the devices command interface may allow further attack vectors that may compromise the cameras configuration and allow malicious users on the LAN to access the device. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

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

The D-Link DCS-5000L and DCS-932L camera firmware contains an elevated privileges vulnerability in the command interface's digest-authentication mechanism. This weak authentication allows malicious users on the same LAN to potentially compromise the device configuration and gain unauthorized access.

MitigationSince these are end-of-life products receiving no further security updates, replace them with currently supported camera models. If immediate replacement is not feasible, isolate the devices on a restricted VLAN to limit LAN-based attack surface.

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
Dcs 932l FirmwareOperating system
Affected:<= 2.17
Dcs 5000l FirmwareOperating system
Affected:= 1.05

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:L/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. Identify the camera model
    Locate the device physically or check your network inventory for D-Link DCS-932L or DCS-5000L camera models. The model number is usually printed on the device label or visible in the device's web interface login page.
    Affected if The device is a D-Link DCS-932L or DCS-5000L camera.
  2. Determine the installed firmware version
    Access the camera's web interface (typically via its IP address) and navigate to the Settings or System Information page to view the firmware version. Alternatively, check the device label or documentation if physically accessible.
    Affected if The firmware version is 2.17 or lower for DCS-932L, or exactly version 1.05 for DCS-5000L.
  3. Verify web interface accessibility
    Attempt to reach the camera's HTTP interface by entering its IP address in a web browser. Look for a login prompt or authentication dialog.
    Affected if The web interface is accessible and responds to requests.
  4. Assess network exposure
    Determine whether the camera is on the same network segment as untrusted users or directly accessible from broader network subnets. Check VLAN configuration and firewall rules surrounding the device.
    Affected if The camera is reachable by other devices on the local network without network isolation.

You are affected if you have a DCS-932L with firmware <= 2.17 or a DCS-5000L with firmware = 1.05, and the device is accessible on your 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 a release after 2.17
Interim mitigation

Since these are end-of-life products receiving no further security updates, replace them with currently supported camera models. If immediate replacement is not feasible, isolate the devices on a restricted VLAN to limit LAN-based attack surface.

Recommended fix High confidence

Replace with currently supported D-Link camera hardware (e.g., DCS-8300LH, DCS-8526LH, or newer models)

  1. Note: Both affected products (DCS-932L and DCS-5000L) are end-of-life and no longer supported by D-Link.
  2. No firmware patches or updates are available for this vulnerability.
  3. Replace the affected devices with currently supported D-Link camera models that receive security updates.
  4. If immediate replacement is not possible, isolate affected devices on a separate VLAN restricted from untrusted networks.
  5. Disable remote access to the device's web interface if not required.
  6. Monitor D-Link's product support pages periodically for any unexpected firmware releases.
Caveat The listed devices are end-of-life with no further firmware support; full hardware replacement is required

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

Fix this in Dcs 932l Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
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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-2021-41504 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
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data