Rv016 Multi Wan Vpn FirmwareOperating system · Cisco
CVE-2019-15271
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 · uneditedA vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an authenticated, remote attacker to execute arbitrary commands with root privileges. The attacker must have either a valid credential or an active session token. The vulnerability is due to lack of input validation of the HTTP payload. An attacker could exploit this vulnerability by sending a malicious HTTP request to the web-based management interface of the targeted device. A successful exploit could allow the attacker to execute commands with root privileges.
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 confidenceCommand injection vulnerability in the web-based management interface of Cisco Small Business RV Series Routers allows authenticated attackers (with valid credentials or session tokens) to execute arbitrary commands with root privileges due to insufficient input validation of HTTP payload.
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
Rv016 Multi Wan Vpn FirmwareOperating system
< 4.2.3.10
Rv042 Dual Wan Vpn FirmwareOperating system
< 4.2.3.10
Rv042g Dual Gigabit Wan Vpn FirmwareOperating system
< 4.2.3.10
Rv082 Dual Wan Vpn FirmwareOperating system
< 4.2.3.10CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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 router's web-based management interface and navigate to the Status or System Summary page to view the hardware model name, or check the physical device labelAffected if The model is not one of RV016, RV042, RV042g, or RV082 - other models are not affected by this CVE
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Check the firmware versionIn the router web interface, go to System Summary or Administration > Firmware Upgrade to view the currently installed firmware version numberAffected if The firmware version is lower than 4.2.3.10 (for example, 4.2.2.x or earlier) - versions prior to 4.2.3.10 are vulnerable
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Verify web-based management interface is enabledIn the router web interface, check Administration > Management or similar section to confirm the HTTP/HTTPS web management interface is turned onAffected if The web-based management interface is enabled - the command injection flaw exists in this interface and requires it to be active
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Check if remote access to the web interface is permittedIn the router web interface, locate the management access settings (often under Administration > Management or Access Settings) and determine if HTTP/HTTPS management is allowed from external/WAN interfacesAffected if The web management interface is accessible from WAN/remote networks - this enables remote attackers to reach the vulnerable interface; if restricted to LAN only, the attack surface is reduced but the vulnerability still exists if internal access is possible
You are affected if your router model is RV016, RV042, RV042g, or RV082, your firmware version is below 4.2.3.10, and the web-based management interface is enabled (with remote exposure increasing severity).
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 · scoped4.2.3.10
Restrict web management interface access to trusted networks/IPs, enforce strong authentication, apply Cisco firmware patches when available, and disable remote management if not required.
Firmware version 4.2.3.10 or later for RV016, RV042, RV042g, and RV082 routers
- 1. Download the latest firmware version 4.2.3.10 or later from the Cisco software download center for your specific model (RV016, RV042, RV042g, or RV082)
- 2. Log in to the Cisco Small Business RV router web-based management interface
- 3. Navigate to the Administration or System Settings section
- 4. Locate the Firmware Upgrade option
- 5. Upload the downloaded firmware file (.bin)
- 6. Wait for the firmware upload and installation to complete - do not power off the device
- 7. After reboot, verify the firmware version in the system status page
- 8. Reconfigure any custom settings that may have been reset to defaults
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Rv016 Multi Wan Vpn Firmware
Exploited in the wild — priority engagement
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 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 $4,544.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-15271 — 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-2019-15271 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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