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X18 FirmwareOperating system · Totolink

CVE-2025-61045

CRITICAL · 9.8 CVSS v3.1 Published 2025-10-01
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
TOTOLINK X18 V9.1.0cu.2053_B20230309 was discovered to contain a command injection vulnerability via the mac parameter in the setEasyMeshAgentCfg function.

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

A command injection vulnerability exists in TOTOLINK X18 router firmware V9.1.0cu.2053_B20230309. The setEasyMeshAgentCfg function fails to properly sanitize the mac parameter, allowing an attacker to inject and execute arbitrary OS commands on the device.

MitigationApply vendor firmware patch if available; otherwise segment the device network and disable untrusted management interfaces to reduce 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
X18 FirmwareOperating system
Affected:= 9.1.0cu.2053_b20230309

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. Identify the device model
    Access the router's web interface or check the device label to confirm it is a TOTOLINK X18 router
    Affected if Device is not a TOTOLINK X18 model
  2. Check the firmware version
    Log into the router admin panel, go to System Status or Firmware Upgrade page, and record the installed firmware version string
    Affected if Firmware version is exactly 9.1.0cu.2053_b20230309
  3. Verify EasyMesh functionality is accessible
    Check if the router's web interface exposes EasyMesh or mesh network configuration settings (usually under Wireless or Network settings)
    Affected if EasyMesh or mesh network configuration interface is available and enabled
  4. Check for the vulnerable parameter exposure
    Inspect HTTP requests to the router's CGI endpoints or check if the setEasyMeshAgentCfg function is exposed via the web interface API
    Affected if The setEasyMeshAgentCfg function or mac parameter input is accessible through the management interface

You are affected if the device is a TOTOLINK X18 running firmware version 9.1.0cu.2053_b20230309 and the EasyMesh configuration interface is accessible.

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

Apply vendor firmware patch if available; otherwise segment the device network and disable untrusted management interfaces to reduce attack surface.

Fix this in X18 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA3.0 h
19.0 hours of engineering $3,380
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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-2025-61045 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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