Rv215w FirmwareOperating system · Cisco
CVE-2022-20893
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 the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W routers stem from insufficient input validation of user-supplied fields in HTTP requests. An authenticated attacker with Administrator credentials can send specially crafted HTTP requests to execute arbitrary commands with root privileges or cause device crashes. No vendor patches are available.
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 router modelLog into the router web interface or check the device label to confirm the model is RV110W, RV130, RV130W, or RV215WAffected if Model is not one of these four listed models
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Check firmware versionNavigate to the web-based management interface Status or Administration section to view the firmware version, or use the router CLI command 'show version'Affected if Firmware version is exactly 1.3.1.7
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Verify web-based management interface is enabledIn the router web interface, go to Administration or Firewall settings and check if HTTP/HTTPS management access is enabled for the applicable network interface (LAN/WAN)Affected if Web-based management interface is enabled on any accessible interface (especially WAN)
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Assess access exposureDetermine if the management interface is reachable from untrusted networks by checking firewall rules, WAN access settings, or network segmentation configurationAffected if Web management interface is exposed to untrusted networks or the internet
You are affected if your router is an RV110W, RV130, RV130W, or RV215W running firmware version 1.3.1.7 with the web-based management interface enabled and accessible to an attacker who could obtain Administrator credentials.
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 firmware updates, organizations should restrict access to the web-based management interface through network segmentation, VPN, or ACLs; disable the interface if not required; and consider replacing affected hardware with supported models.
- No vendor-provided software update is available for this vulnerability as of the vulnerability disclosure.
- Cisco has explicitly stated that no software updates will be released to address these vulnerabilities.
- Monitor Cisco Security Advisory tools.cisco.com for any future updates or end-of-life notices.
- Consider network segmentation to limit access to the web-based management interface.
- Implement strong administrative credential management to reduce the attack surface, though this does not eliminate the vulnerability itself.
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-2022-20893 — 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-2022-20893 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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