Rv215w FirmwareOperating system · Cisco
CVE-2022-20903
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 authenticated attackers with Administrator credentials to send crafted HTTP requests with insufficiently validated user fields, enabling arbitrary command execution with root privileges or device crash/ restart.
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 router web interface or check the device label to confirm the exact model number (RV110W, RV130, RV130W, or RV215W).Affected if Model is one of RV110W, RV130, RV130W, or RV215W.
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Check firmware versionIn the router web interface, navigate to Status > System Summary or Administration > Firmware Upgrade to view the currently installed firmware version.Affected if Firmware version is 1.3.1.7.
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Verify web management interface is enabledIn the router web interface, go to Administration > Management and confirm the HTTP/HTTPS management interface is enabled and accessible from your network.Affected if Web-based management interface is accessible.
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Confirm administrator access existsReview user accounts in Administration > User Management to determine if any accounts with Administrator privileges exist or could exist.Affected if An administrator account exists or can be created on the device.
You are affected if you have an RV110W, RV130, RV130W, or RV215W router running firmware version 1.3.1.7 with the web-based management interface enabled and an administrator account present.
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 · scopedNo Cisco software updates are available as these are end-of-life devices; replace affected routers with supported models and implement network segmentation to limit exposure to the management interface.
- Since Cisco has not released software updates for this vulnerability, there is no direct fix available.
- Restrict network access to the router's web-based management interface by implementing access control lists (ACLs) or placing the device behind a firewall/VPN.
- If remote management is not required, disable remote access and only allow local administration.
- Ensure Administrator accounts use strong, unique passwords to reduce the risk of credential compromise.
- Monitor Cisco security advisories for any future updates or workaround guidance.
- Consider network segmentation to limit exposure of the management interface to trusted networks only.
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Rv215w Firmware
Scoped from the published advisory
- Consultation8.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,608.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-20903 — 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-2022-20903 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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