B Qe2w401 FirmwareOperating system · Adslr

CVE-2025-13800

CRITICAL · 9.8 CVSS v3.1 Published 2025-12-01
Fix available
A fix is available. Upgrade to after 250814-r037c or later.
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
A vulnerability was found in ADSLR NBR1005GPEV2 250814-r037c. This issue affects the function set_mesh_disconnect of the file /send_order.cgi. The manipulation of the argument mac results in command injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

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 the set_mesh_disconnect function of /send_order.cgi on the ADSLR NBR1005GPEV2 router firmware (250814-r037c). The mac parameter is not properly sanitized before being used in a system call, allowing an unauthenticated remote attacker to execute arbitrary commands on the underlying operating system.

MitigationIsolate the affected device on a restricted network segment immediately. Contact the vendor for firmware updates; if unavailable, consider replacing the device. Implement Web Application Firewall rules to detect and block command injection attempts as a temporary mitigation.

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
B Qe2w401 FirmwareOperating system
Affected:<= 250814-r037c

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 web interface or check the device label for the model number NBR1005GPEV2 or verify through SNMP/firmware banner
    Affected if The device is an Adslr NBR1005GPEV2 router
  2. Determine the firmware version
    Log into the router admin interface and navigate to the status or system information page to locate the firmware build version, or extract the firmware binary and search for the version string 250814-r037c
    Affected if The firmware version is 250814-r037c or earlier (lower version number)
  3. Verify the affected CGI is accessible
    Attempt to access http://<router_ip>/send_order.cgi - the vulnerability exists in this CGI endpoint
    Affected if The web interface is reachable and send_order.cgi responds to requests
  4. Confirm the vulnerable parameter exists
    Check if the set_mesh_disconnect function is present by examining the CGI binary or sending a request with the mac parameter to send_order.cgi
    Affected if The mac parameter is accepted by set_mesh_disconnect in send_order.cgi

You are affected if you have an Adslr NBR1005GPEV2 router running firmware version 250814-r037c or earlier, with the web interface accessible and the send_order.cgi endpoint accepting the mac parameter.

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 250814-r037c
Interim mitigation

Isolate the affected device on a restricted network segment immediately. Contact the vendor for firmware updates; if unavailable, consider replacing the device. Implement Web Application Firewall rules to detect and block command injection attempts as a temporary mitigation.

Fix this in B Qe2w401 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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Scan for this in your stack

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dbcve dependency scanner

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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-2025-13800 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
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data