dbcve.org
Router FirmwareOperating system · Bectechnologies

CVE-2025-2771

MEDIUM · 5.3 CVSS v3.0 Published 2025-04-23
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
62/100
Remediation priority · Elevated
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
BEC Technologies Multiple Routers Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of BEC Technologies routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web-based user interface. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-25894.

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

This is an authentication bypass vulnerability in the web-based user interface of BEC Technologies routers. The flaw stems from the lack of authentication checks before allowing access to certain functionalities in the web UI, enabling unauthenticated attackers to bypass the login mechanism and access router administration features.

MitigationApply vendor-provided firmware updates when available. Until patches are released, restrict network access to the router management interface using firewall rules or VPN access to limit exposure to trusted networks only.

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
Router FirmwareOperating system
Affected:all versions

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
Low
Integrity
None
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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. Confirm BEC Technologies router model
    Log into the router web interface and navigate to Status or System Information page to identify the exact model number, or check the physical device label
    Affected if The device is a BEC Technologies router with web-based management interface
  2. Verify web UI is accessible externally
    Check router configuration for 'Remote Management', 'Web Access', or 'Administration' settings to see if the web interface is enabled for WAN/remote access
    Affected if Remote management/WAN access to the web UI is enabled and the router is directly reachable from the internet
  3. Check for network exposure
    Review firewall rules or port forwarding configurations to determine if the router's admin web interface (typically ports 80/443) is exposed to untrusted networks or the public internet
    Affected if The router management port is exposed to untrusted networks without VPN or IP-based access restrictions
  4. Document firmware version
    Access router Status or System Information page to record the installed firmware version for inventory purposes
    Affected if Any BEC Technologies router firmware version is installed (all versions are affected)
  5. Verify access control measures
    Inspect router security settings to confirm whether administrative access is restricted by IP address or requires VPN tunnel rather than being openly accessible
    Affected if No IP-based restrictions or VPN requirements are configured for web UI access

A user is affected if they operate a BEC Technologies router with the web management interface exposed to untrusted networks without compensating access controls.

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-provided firmware updates when available. Until patches are released, restrict network access to the router management interface using firewall rules or VPN access to limit exposure to trusted networks only.

Fix this in Router Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2025-2771 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

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-2025-2771 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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