Rv215w FirmwareOperating system · Cisco
CVE-2022-20889
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 confidenceThe vulnerabilities stem from insufficient validation of user input fields within HTTP packets sent to the web-based management interface of Cisco Small Business RV series routers. An authenticated attacker with valid Administrator credentials can send crafted HTTP requests to execute arbitrary commands with root-level privileges or cause the device to unexpectedly restart, resulting in denial of service.
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= 1.2.2.8= 1.3.1.7
Rv130w FirmwareOperating system
= 1.0.3.55= 1.2.2.8= 1.3.1.7
Rv130 FirmwareOperating system
= 1.0.3.55= 1.2.2.8= 1.3.1.7
Rv110w FirmwareOperating system
= 1.0.3.55= 1.2.2.8= 1.3.1.7
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-based management interface or check the physical device label to confirm the model is one of: RV215w, RV130w, RV130, RV110w, or Application Extension PlatformAffected if The device model is any of the listed affected models
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Check the firmware versionLog into the web-based management interface and navigate to Status > System Summary or similar, or use the CLI command 'show version' to display the firmware versionAffected if The installed firmware version matches exactly 1.0.3.55, 1.2.2.8, or 1.3.1.7
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Verify web-based management interface is enabledCheck the device configuration under Administration > Management Access or similar to confirm HTTP/HTTPS management interface is enabledAffected if The web-based management interface is accessible (enabled) on any interface (LAN or WAN)
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Check for existing Administrator accountsReview user accounts configured on the device under Administration > User Management or similar to identify if Administrator-level accounts existAffected if At least one Administrator-level account is configured on the device
A user is affected if they have a Cisco RV215w, RV130w, RV130, RV110w, or Application Extension Platform device running firmware version 1.0.3.55, 1.2.2.8, or 1.3.1.7 with the web-based management interface accessible and at least one Administrator account configured.
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 restrict network access to the management interface (avoid exposure to the internet), implement strong administrator passwords, and strongly consider replacing affected end-of-life devices with supported hardware.
- 1. Restrict network access to the router's web-based management interface. Only allow trusted management networks or IPs to access the admin interface.
- 2. Implement strong administrator password policies and consider using IP access lists if supported by the device.
- 3. Monitor for any available firmware updates from Cisco that address these vulnerabilities.
- 4. Consider network segmentation to isolate the router from sensitive network segments.
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Rv215w Firmware
Scoped from the published advisory
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,680.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-20889 — 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-2022-20889 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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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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