dbcve.org
Dir 1950 FirmwareOperating system · Dlink

CVE-2024-36755

MEDIUM · 6.8 CVSS v3.1 Published 2024-06-27
Fix available
A fix is available. Upgrade to after 1.11b03 or later.
See remediation →
73/100
Remediation priority · Elevated
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-1950 up to v1.11B03 does not validate SSL certificates when requesting the latest firmware version and downloading URL. This can allow attackers to downgrade the firmware version or change the downloading URL via a man-in-the-middle attack.

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 DIR-1950 router firmware (up to v1.11B03) fails to validate SSL certificates when making requests to check for firmware updates and downloading firmware files. This allows man-in-the-middle attackers to intercept the update check process and inject malicious firmware URLs or serve downgraded/malicious firmware versions to the device.

MitigationAvoid using the firmware update feature until D-Link releases a patched firmware version. If updates are necessary, perform them only on a fully trusted network or consider manual firmware downloads from D-Link's official website verified via hash.

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 1950 FirmwareOperating system
Affected:<= 1.11b03

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

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

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 device model
    Access the router web interface or check the device label/menu to confirm the model is D-Link DIR-1950
    Affected if The device is a D-Link DIR-1950 router
  2. Check the firmware version
    Log into the router web interface and navigate to Status or Management section to view the current firmware version. Compare against 1.11B03
    Affected if The installed firmware version is 1.11B03 or any version lower (for example, 1.10, 1.09, etc.)
  3. Verify the update check functionality exists
    In the router web interface, locate the firmware update or firmware check section (usually under Administration, Maintenance, or System settings)
    Affected if The router has a firmware update check feature available in the web interface

If the device is a D-Link DIR-1950 running firmware version 1.11B03 or lower, the device is affected by the SSL certificate validation failure during firmware updates.

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.

From vendor data
Upgrade available Upgrade to a release after 1.11b03
Interim mitigation

Avoid using the firmware update feature until D-Link releases a patched firmware version. If updates are necessary, perform them only on a fully trusted network or consider manual firmware downloads from D-Link's official website verified via hash.

Fix this in Dir 1950 Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Testing4.0 h
  • Review / QA2.0 h
8.0 hours of engineering $1,360
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,176.

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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-2024-36755 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