Rv016 Multi Wan Vpn FirmwareOperating system · Cisco
CVE-2019-15957
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 with administrative privileges to inject arbitrary commands into the underlying operating system. When processed, the commands will be executed with root privileges. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by providing malicious input to a specific field in the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux operating system as the root user.
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 confidenceAuthenticated command injection vulnerability in Cisco Small Business RV Series Routers web-based management interface allows remote attackers with administrative privileges to inject arbitrary Linux commands that execute with root privileges due to insufficient input validation on specific web form 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
Rv016 Multi Wan Vpn FirmwareOperating system
< 4.2.3.10
Rv042 Dual Wan VpnOperating system
< 4.2.3.10
Rv042g Dual Gigabit Wan Vpn FirmwareOperating system
< 4.2.3.10
Rv082 Dual Wan Vpn Router FirmwareOperating system
< 4.2.3.10
Rv320 FirmwareOperating system
< 1.5.1.05
Rv325 FirmwareOperating system
< 1.5.1.05CVSS 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 modelLocate the router model number on the physical device label or check the device's web management interface system information pageAffected if The model is one of: Rv016, Rv042, Rv042g, Rv082, Rv320, or Rv325
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Check the installed firmware versionAccess the router's web-based management interface and navigate to the System Summary or Status page to view the firmware version, or use the 'show version' command via console/SSH if availableAffected if The firmware version is below 4.2.3.10 for Rv016/Rv042/Rv042g/Rv082, or below 1.5.1.05 for Rv320/Rv325
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Verify if the web-based management interface is exposedCheck the router's access control settings to determine if the web management interface is reachable from external networks or untrusted interfacesAffected if The web-based management interface is accessible from untrusted networks (such as the WAN interface) or the internet
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Confirm administrative access existsReview the list of configured administrative accounts in the router's user management or administrator settings within the web interfaceAffected if There is at least one administrative account configured with privileges to access the router's web management interface
A user is affected if they own one of the listed router models, are running firmware below the specified version, and have the web management interface accessible with administrative accounts 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.
From vendor data1.5.1.054.2.3.10
Apply Cisco's firmware update for affected RV Series router models. Restrict web management interface access to trusted networks and monitor for unauthorized administrative access until patched.
Fix this in Rv016 Multi Wan Vpn Firmware
Scoped from the published advisory
- Consultation3.0 h
- Implementation4.0 h
- Testing2.0 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 $3,168.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-15957 — 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-2019-15957 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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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