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Rv132w FirmwareOperating system · Cisco

CVE-2018-0127

CRITICAL · 9.8 CVSS v3.1 Published 2018-02-08
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
High EPSS 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 in the web interface of Cisco RV132W ADSL2+ Wireless-N VPN Routers and Cisco RV134W VDSL2 Wireless-AC VPN Routers could allow an unauthenticated, remote attacker to view configuration parameters for an affected device, which could lead to the disclosure of confidential information. The vulnerability is due to the absence of user authentication requirements for certain pages that are part of the web interface and contain confidential information for an affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device and examining the HTTP response to the request. A successful exploit could allow the attacker to view configuration parameters, including the administrator password, for the affected device. Cisco Bug IDs: CSCvg92739, CSCvh60172.

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

Authentication bypass vulnerability in Cisco RV132W and RV134W VPN router web interfaces allows unauthenticated remote attackers to access certain pages that contain confidential device configuration, including the administrator password, by sending crafted HTTP requests without any credentials.

MitigationApply Cisco firmware updates from CSCvg92739/CSCvh60172. If immediate patching is not feasible, restrict web interface access to trusted networks via firewall rules or disable remote web management access.

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
Rv132w FirmwareOperating system
Affected:= 1.0.0.1= 1.0.1.8
Rv134w FirmwareOperating system
Affected:= 1.0.0.1= 1.0.1.8

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 router model
    Check the device label or log into the web interface and look for the model number displayed on the status or administration page
    Affected if The device is not a Cisco RV132W or RV134W VPN router
  2. Check the installed firmware version
    Log into the router web interface and navigate to Administration > Firmware Upgrade or Status page to view the current firmware version
    Affected if The firmware version is exactly 1.0.0.1 or exactly 1.0.1.8
  3. Verify remote web management is enabled
    In the router web interface, go to Administration > Remote Management or VPN > Web Server settings and check if remote access is enabled
    Affected if Remote web management access is enabled and the device is accessible from untrusted networks
  4. Confirm web interface accessibility
    Attempt to access the router login page from an external network or check firewall rules that allow or block inbound HTTP/HTTPS to the device
    Affected if The router web interface is reachable from untrusted or public IP addresses without VPN tunnel

The device is affected if it is a Cisco RV132W or RV134W router running firmware version 1.0.0.1 or 1.0.1.8 with its web management interface exposed to untrusted networks.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply Cisco firmware updates from CSCvg92739/CSCvh60172. If immediate patching is not feasible, restrict web interface access to trusted networks via firewall rules or disable remote web management access.

Recommended fix Moderate confidence

Latest firmware version available from Cisco for RV132W/RV134W (contact Cisco support for specific version containing fix for CSCvg92739/CSCvh60172)

  1. 1. Access the Cisco support portal at tools.cisco.com and search for Cisco RV132W or RV134W firmware updates using bug IDs CSCvg92739 or CSCvh60172.
  2. 2. Download the latest available firmware version for your device model (RV132W or RV134W).
  3. 3. Log into the router web interface as administrator.
  4. 4. Navigate to the Administration > Firmware Upgrade or similar firmware upload section.
  5. 5. Upload and apply the new firmware version.
  6. 6. After upgrade, verify the vulnerability is remediated by attempting to access unauthenticated configuration pages via HTTP request.
  7. 7. Change the administrator password immediately after the upgrade as a precautionary measure.
Caveat Review Cisco release notes for any configuration or feature changes before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Rv132w Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing1.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,090
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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-2018-0127 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