Rv215w FirmwareOperating system · Cisco
CVE-2022-20887
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 vulnerabilities in the web-based management interface of Cisco RV110W, RV130, RV130W, and RV215W routers allow authenticated attackers to execute arbitrary commands with root privileges or cause device DoS via 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
= 1.0.3.55
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 web interface or check the physical device label to confirm the model is one of: RV110W, RV130, RV130W, RV215W, or Cisco Application Extension PlatformAffected if The device model matches one of these four router models or the Application Extension Platform
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Check the firmware versionLog into the web management interface and navigate to Status > System Summary or check the firmware version via CLI command 'show version'. Compare the installed version to 1.0.3.55Affected if The firmware version is exactly 1.0.3.55 (this is an exact version match, not a range)
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Confirm web-based management interface is enabledIn the router web interface, go to Administration > Management or similar section and verify HTTP or HTTPS management access is enabledAffected if The web-based management interface (HTTP/HTTPS) is enabled and accessible
You are affected if your device is a Cisco RV110W, RV130, RV130W, RV215W, or Application Extension Platform running firmware version 1.0.3.55 and the web management interface is enabled, because the vulnerability can be exploited via authenticated HTTP requests to execute arbitrary commands with root privileges.
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 · scopedRestrict web management interface access to trusted internal networks only, implement network segmentation, and monitor for suspicious admin activity; given Cisco has not released patches and these devices are EOL, plan for replacement with supported hardware.
- 1. Implement network access controls (ACLs) to restrict access to the web-based management interface (HTTPS, typically port 443) to only trusted IP addresses or networks.
- 2. If possible, disable remote management access and manage the device only from the local LAN segment.
- 3. Place the router behind a VPN concentrator or firewall to add an additional authentication layer before reaching the management interface.
- 4. Ensure strong, unique administrator passwords and change them regularly.
- 5. Monitor for any unauthorized access attempts or suspicious administrative activity.
- 6. Consider replacing end-of-life devices, as Cisco has not released software updates to address these vulnerabilities.
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Rv215w Firmware
Scoped from the published advisory
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-20887 — 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-2022-20887 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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