Rv215w FirmwareOperating system · Cisco
CVE-2022-20881
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 Cisco Small Business RV series routers (RV110W, RV130, RV130W, RV215W) stem from insufficient validation of user-supplied fields in HTTP requests to the web-based management interface. An authenticated attacker with Administrator credentials can send crafted requests to execute arbitrary commands with root privileges or cause device 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
= 1.0.3.55
Rv130w FirmwareOperating system
= 1.0.3.55
Rv130 FirmwareOperating system
= 1.0.3.55
Rv110w FirmwareOperating system
= 1.0.3.55
Application Extension PlatformPlugin / extension
= 1.0.3.55CVSS 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 management interface or CLI and retrieve the hardware model information. Look for RV110W, RV130, RV130W, RV215W, or Cisco Application Extension Platform.Affected if The model is one of RV110W, RV130, RV130W, RV215W, or the Cisco Application Extension Platform.
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Check the installed firmware versionIn the web interface, navigate to Administration > Firmware Upgrade or use the CLI command 'show version' to retrieve the firmware version string.Affected if The firmware version is exactly 1.0.3.55.
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Confirm the web-based management interface is enabledIn the web interface, go to Administration > Management Access and verify that HTTP/HTTPS management is enabled. Alternatively, check via CLI with 'show running-config | include http' or similar.Affected if The web-based management interface (HTTP or HTTPS) is enabled on any interface.
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Check if remote management is exposedIn the web interface, navigate to Administration > Management Access and check which interfaces have HTTP/HTTPS management enabled. Verify if the WAN/Internet-facing interface has remote management access.Affected if The web management interface is accessible from the WAN/Internet interface (remote management enabled).
The device is affected if it is an RV110W, RV130, RV130W, RV215W, or Application Extension Platform running firmware version 1.0.3.55 with the web-based management interface enabled, especially if accessible remotely.
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 patches, implement compensating controls: restrict web management interface access to trusted networks/VPN only, disable remote management if not required, monitor for anomalous HTTP requests, and plan for hardware replacement.
- Restrict web-based management interface access to trusted internal networks only, blocking external access via firewall rules
- If web management interface must be accessible, implement IP access lists to limit source IPs
- Change Administrator credentials immediately and use strong, unique passwords
- Monitor Cisco security advisories for future updates on these vulnerabilities
- Consider network segmentation to isolate affected router from critical systems
- Disable remote management via WAN if not strictly required
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-2022-20881 — 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-2022-20881 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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- Version or environment caveats, and links to real fixes
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