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Rv215w FirmwareOperating system · Cisco

CVE-2022-20895

HIGH · 7.2 CVSS v3.1 Published 2022-07-22
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 on an affected device or cause the device to restart unexpectedly, resulting in a denial of service (DoS) condition. These vulnerabilities are due to insufficient validation of user fields within incoming HTTP packets. An attacker could exploit these vulnerabilities by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to execute arbitrary commands on an affected device with root-level privileges or to cause the device to restart unexpectedly, resulting in a 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

The vulnerabilities exist in the web-based management interface of Cisco Small Business RV series routers (RV110W, RV130, RV130W, RV215W). Insufficient validation of user-supplied fields in HTTP requests allows an authenticated attacker with Administrator credentials to send crafted requests that result in arbitrary command execution with root-level privileges or cause device denial of service via unexpected restarts.

MitigationSince no vendor patches are available, organizations should restrict access to the router management interface to trusted networks only, disable remote management if not required, monitor for unauthorized access attempts, and 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
Rv215w FirmwareOperating system
Affected:= 1.3.1.7
Rv130w FirmwareOperating system
Affected:= 1.3.1.7
Rv130 FirmwareOperating system
Affected:= 1.3.1.7
Rv110w FirmwareOperating system
Affected:= 1.3.1.7

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 the router model
    Access the router web interface or check the device label to confirm the model is RV110W, RV130, RV130W, or RV215W
    Affected if Model is one of RV110W, RV130, RV130W, or RV215W
  2. Check the firmware version
    Log into the web-based management interface and navigate to Status > System Summary or check the firmware version via CLI command 'show version' to identify the installed firmware version
    Affected if Firmware version is 1.3.1.7
  3. Verify web-based management interface status
    In the router web interface, go to Administration > Management > HTTP/HTTPS and confirm whether the web-based management interface is enabled
    Affected if Web-based management interface is enabled and accessible
  4. Check remote management settings
    In the router web interface, go to Administration > Management > Remote Management and determine if remote management access is allowed
    Affected if Remote management over HTTP/HTTPS is enabled, allowing access from untrusted networks

Your environment is affected if you have a Cisco RV110W, RV130, RV130W, or RV215W router running firmware version 1.3.1.7 with the web-based management interface enabled, especially if remote management is accessible from 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

Since no vendor patches are available, organizations should restrict access to the router management interface to trusted networks only, disable remote management if not required, monitor for unauthorized access attempts, and consider replacing affected devices with supported hardware.

Recommended fix High confidence
  1. No vendor-provided fix is available. Cisco has explicitly stated no software updates will be released for these vulnerabilities.
  2. Consider migrating to a currently supported Cisco small business router model.
  3. If migration is not immediately possible, limit administrative access to the web management interface to trusted IP addresses only.
  4. Monitor Cisco security advisories for any future updates, though Cisco has indicated end-of-life for these models.
Caveat These router models (RV110W, RV130, RV130W, RV215W) have reached end-of-life with no security patches available; replacement with a supported model is required

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

Fix this in Rv215w Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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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-2022-20895 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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