Rv215w FirmwareOperating system · Cisco
CVE-2022-20899
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 input validation vulnerabilities in the web-based management interface of Cisco Small Business RV series routers allow authenticated attackers with Administrator credentials to inject arbitrary commands via crafted HTTP requests due to insufficient validation of user input fields. Successful exploitation grants root-level code execution or causes device denial of service through unexpected restarts.
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 the router modelAccess the device's web interface or check the physical device label to determine if it is a Cisco RV215w, RV130w, RV130, or RV110w routerAffected if The device is one of these four models
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Check the firmware versionLog into the web-based management interface and navigate to Status > System Summary or check the firmware version displayed on the login page or in the administration settings. Alternatively, use the command line and run 'show version' or access the device via SNMP to query the firmware versionAffected if The firmware version is exactly 1.3.1.7
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Verify the web management interface is enabledCheck the device configuration for HTTP/HTTPS management access settings. This is typically found under Administration > Management Access or similar. Use the CLI command 'show running-config | include http' or check via SNMPAffected if The web-based management interface (HTTP or HTTPS) is enabled and accessible
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Confirm Administrator accounts existCheck the device for configured user accounts with Administrator privileges via the web interface under Administration > User Management or via CLI command 'show privilege' after loginAffected if At least one Administrator-level account is configured on the device
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Assess network accessibility of management interfaceDetermine if the management interface is reachable from untrusted networks by checking the interface binding settings (often under Administration > Management Access > Management Interface) and by scanning for open HTTP/HTTPS ports (80/443) on the device IP addressAffected if The management interface is accessible from networks outside the local administration segment
You are affected if you own a Cisco RV215w, RV130w, RV130, or RV110w router running firmware version 1.3.1.7 with the web management interface enabled and accessible from your network.
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, organizations should immediately restrict access to the management interface via network segmentation, enforce strict access control lists, implement strong AAA controls, and strongly consider replacing affected devices with supported hardware.
- This vulnerability has no available fix from Cisco.
- Confirm the device model and current firmware version.
- Implement network segmentation to limit access to the management interface.
- If possible, restrict web-based management access to trusted internal IP addresses only.
- Monitor Cisco security advisories for any future updates or End-of-Life notices.
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
- Implementation16.0 h
- Testing8.0 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 $10,240.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-20899 — 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-2022-20899 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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