dbcve.org
Dir 513 FirmwareOperating system · Dlink

CVE-2025-46108

CRITICAL · 9.8 CVSS v3.1 Published 2026-03-04
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable 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-513 A1FW110 is vulnerable to Buffer Overflow in the function formTcpipSetup.

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 confidence

Buffer overflow vulnerability in the formTcpipSetup function of D-Link DIR-513 A1FW110 router firmware allows remote attackers to execute arbitrary code via specially crafted network requests. The function likely fails to properly validate input length before copying data into a fixed-size buffer.

MitigationIsolate affected device from untrusted networks; contact D-Link for firmware update; if no patch available, consider replacing the device as DIR-513 is an older end-of-life product.

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 513 FirmwareOperating system
Affected:= 1.10

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 checks

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

  1. Confirm device model
    Access the router web interface or check the device label to verify the model is D-Link DIR-513 A1FW110
    Affected if Device is not a D-Link DIR-513 A1FW110 router
  2. Verify firmware version
    In the router web interface, navigate to the Status or Firmware Upgrade page and check if the firmware version is 1.10
    Affected if Firmware version is not 1.10 exactly
  3. Check web management interface status
    Verify that the router's HTTP/HTTPS web management interface is enabled and accessible on the LAN or WAN interface
    Affected if Web management interface is disabled and inaccessible to attacker
  4. Verify TCP/IP setup feature accessibility
    Confirm that the network TCP/IP setup functionality (formTcpipSetup) is accessible - typically found under Network or WAN settings in the router web interface
    Affected if The TCP/IP setup feature is not reachable or requires authentication not available to attacker

The device is affected if it is a D-Link DIR-513 A1FW110 router running firmware version 1.10 with the web management interface enabled, allowing access to the vulnerable formTcpipSetup function.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Isolate affected device from untrusted networks; contact D-Link for firmware update; if no patch available, consider replacing the device as DIR-513 is an older end-of-life product.

Fix this in Dir 513 Firmware Scoped from the published advisory
  • Consultation6.0 h
  • Implementation20.0 h
  • Testing10.0 h
  • Review / QA6.0 h
42.0 hours of engineering $7,380
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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-2025-46108 in production — separate from our analysis above.

No notes yet

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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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