Rv215w FirmwareOperating system · Cisco
CVE-2022-20901
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 · uneditedMultiple 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 confidenceMultiple command injection and DoS vulnerabilities in the web-based management interface of Cisco Small Business RV series routers (RV110W, RV130, RV130W, RV215W) allow an authenticated remote attacker with Administrator credentials to execute arbitrary commands with root privileges or cause device crashes via crafted HTTP requests with insufficiently validated user input fields.
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
= 1.3.1.7
Rv130w FirmwareOperating system
= 1.3.1.7
Rv130 FirmwareOperating system
= 1.3.1.7
Rv110w FirmwareOperating system
= 1.3.1.7CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Identify router modelLog into the device web interface or check the device label to confirm the model is RV110W, RV130, RV130W, or RV215W.Affected if Model is not one of these four listed models.
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Check firmware versionNavigate to the web management interface Status or Administration > Firmware page to view the installed firmware version.Affected if Firmware version is exactly 1.3.1.7.
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Verify web-based management is enabledCheck the device configuration under Administration > Management > HTTP/HTTPS to confirm the web-based management interface is enabled.Affected if Web management interface is enabled.
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Confirm remote management access is permittedCheck the HTTP/HTTPS management settings to see if remote access from external IPs is allowed (versus local LAN-only access).Affected if Remote access to the web management interface is enabled for external/untrusted networks.
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Review Administrator account existenceCheck under Administration > User Management to verify if any Administrator-level accounts are configured on the device.Affected if At least one Administrator account exists (required for exploit execution).
The environment is affected if the router model is RV110W, RV130, RV130W, or RV215W, running firmware version 1.3.1.7, with the web-based management interface enabled and accessible.
Generated from the published advisory. Verify against your own configuration.
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 · scopedSince Cisco has not released software updates, mitigate by disabling remote web management access, restricting management interface to trusted IPs only, enforcing strong Administrator credentials, and/or replacing affected end-of-life devices with supported hardware.
- Restrict network access to the web-based management interface to only trusted management networks or IP addresses using ACLs
- Ensure Administrator accounts use strong, unique passwords and consider implementing multi-factor authentication if available
- Segment the router management network from general production networks
- Monitor logs for suspicious authentication attempts or unusual HTTP requests
- Consider migrating to a supported router model if the device has reached end-of-life, as no firmware patches are available
- Disable remote management access from the internet (WAN side) if not required, limiting access to LAN-side only
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
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-20901 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-20901 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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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.
- 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
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