Rv110w FirmwareOperating system · Cisco
CVE-2021-1216
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 or cause an affected device to restart unexpectedly. The vulnerabilities are due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the device to reload, resulting in a denial of service (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 RV110W, RV130, RV130W, and RV215W routers allow authenticated remote attackers to execute arbitrary code as root or cause device reload via crafted HTTP requests. The vulnerabilities stem from improper validation of user-supplied input in the management UI.
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
Rv110w FirmwareOperating system
= 1.2.2.8= 1.3.1.7
Rv130 Vpn Router FirmwareOperating system
= 1.2.2.8= 1.3.1.7
Rv130w FirmwareOperating system
= 1.2.2.8= 1.3.1.7
Rv215w Wireless N Vpn Router FirmwareOperating system
= 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 management interface or CLI and identify the exact model number (RV110W, RV130, RV130W, or RV215W)Affected if Model is RV110W, RV130, RV130W, or RV215W, or device is Cisco Application Extension Platform (AXP)
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Check the installed firmware versionLog into the router web UI and navigate to Status > System Summary, or use CLI command 'show version' to retrieve the firmware versionAffected if Firmware version equals 1.2.2.8 or 1.3.1.7 for RV series routers, or version equals 1.0.3.55 for Application Extension Platform
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Verify web-based management interface is enabledIn the router web UI, go to Firewall > Management Access or similar section to confirm the HTTP/HTTPS management interface is enabledAffected if Web-based management interface (HTTP or HTTPS) is enabled on the device
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Confirm remote access is permittedCheck the management access settings to determine if the web interface is accessible from WAN (remote) networks, not just LANAffected if Remote management over HTTP/HTTPS is allowed from external networks (WAN interface)
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Check for existing administrator sessionsIn the web UI, review the Administration > User Accounts or Session Management page for any unexpected or unauthorized administrator sessionsAffected if Any active or recent unexpected administrator sessions are present indicating potential exploitation
Device is affected if it is a Cisco RV110W, RV130, RV130W, or RV215W router (or Application Extension Platform) running firmware version 1.2.2.8 or 1.3.1.7 (or 1.0.3.55 for AXP) with the web-based management interface accessible to the attacker.
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.
From vendor dataSince Cisco has not released patches, implement compensating controls: restrict web management interface access to trusted networks/VPN only, disable remote management if not needed, enforce strong administrator credentials, and monitor for suspicious HTTP activity.
Fix this in Rv110w 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-2021-1216 — 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-2021-1216 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
- No weaponised exploit code, or anything meant to cause harm
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