dbcve.org
Rv110w FirmwareOperating system · Cisco

CVE-2021-1183

HIGH · 7.2 CVSS v3.1 Published 2021-01-13
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
78/100
Remediation priority · High
Remotely reachable 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
Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an authenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly. The vulnerabilities are due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the device to reload, resulting in a denial of service (DoS) condition. To exploit these vulnerabilities, an attacker would need to have valid administrator credentials on the affected device. Cisco has not released software updates that address these vulnerabilities.

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

Improper validation of user-supplied input in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers allows an authenticated attacker with admin credentials to execute arbitrary code as root user or cause denial of service via device reload through crafted HTTP requests.

MitigationSince Cisco has not released patches, organizations should restrict management interface access to trusted networks only, enforce strong administrator credentials, and strongly consider replacing affected devices with supported hardware.

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
Rv110w FirmwareOperating system
Affected:= 1.0.3.44
Rv130 FirmwareOperating system
Affected:= 1.0.3.44
Rv130w FirmwareOperating system
Affected:= 1.0.3.44
Rv215w FirmwareOperating system
Affected:= 1.0.3.44

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
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/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 router model
    Log into the device web interface or CLI and locate the device model name in Status, Device Info, or System Summary pages. From CLI, use 'show version' or 'show system-info'.
    Affected if Model is RV110W, RV130, RV130W, or RV215W
  2. Check firmware version
    In the web interface, navigate to Status, Device Info, or System Summary to view the firmware version. From CLI, use 'show version' or 'show firmware version'.
    Affected if Firmware version is 1.0.3.44
  3. Verify web-based management interface is enabled
    In the web interface, go to Administration, Management Access, or Firewall settings to confirm the HTTP/HTTPS management interface is enabled. From CLI, check management interface settings with 'show running-config' or 'show http server status'.
    Affected if HTTP or HTTPS web management interface is enabled and accessible
  4. Confirm admin credentials exist
    In the web interface, go to Administration, User Management, or Administration > User Accounts to verify at least one admin account is configured. From CLI, use 'show users' or 'show privilege'.
    Affected if At least one admin-level user account is configured on the device

If the device is an RV110W, RV130, RV130W, or RV215W running firmware version 1.0.3.44 with the web-based management interface enabled and an admin account configured, the environment is affected by this CVE.

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

Since Cisco has not released patches, organizations should restrict management interface access to trusted networks only, enforce strong administrator credentials, and strongly consider replacing affected devices with supported hardware.

Fix this in Rv110w Firmware Scoped from the published advisory
  • Consultation8.0 h
  • Implementation16.0 h
  • Testing8.0 h
  • Review / QA4.0 h
36.0 hours of engineering $6,400
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Scan for this in your stack

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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-2021-1183 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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  • No spam, self-promotion, credentials, or personal data