Rv016 FirmwareOperating system · Cisco
CVE-2020-3278
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 RV320 and RV325 Series Routers and Cisco Small Business RV016, RV042, and RV082 Routers could allow an authenticated, remote attacker with administrative privileges to execute arbitrary commands on an affected device. The vulnerabilities exist because the web-based management interface does not properly validate user-supplied input to scripts. An attacker with administrative privileges that are sufficient to log in to the web-based management interface could exploit each vulnerability by sending malicious requests to an affected device. A successful exploit could allow the attacker to execute arbitrary commands with root privileges on the underlying operating system.
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 · moderate confidenceMultiple command injection vulnerabilities exist in the web-based management interface of Cisco Small Business RV320, RV325, RV016, RV042, and RV082 routers due to improper validation of user-supplied input. An authenticated attacker with administrative privileges can send malicious requests to execute arbitrary commands with root privileges on the underlying operating system.
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 FirmwareOperating system
<= 4.2.3.10
Rv042 FirmwareOperating system
<= 4.2.3.10
Rv042g FirmwareOperating system
<= 4.2.3.10
Rv082 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 router modelAccess the router's web management interface and check the System Summary page, or look for the model number on the physical device label or in the web UI footerAffected if The model is one of: RV016, RV042, RV042G, RV082, RV320, or RV325
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Check firmware versionIn the web management interface, navigate to System Summary or Status > System to view the firmware version. Alternatively, check the header/footer of each web page which often displays the firmware versionAffected if For RV016, RV042, RV042G, RV082: version is 4.2.3.10 or lower. For RV320, RV325: version is 1.5.1.05 or lower
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Verify web management interface is accessibleAttempt to access the router's IP address via HTTP/HTTPS in a web browser. Confirm the login page loadsAffected if The web interface is reachable from untrusted networks (such as the internet or guest networks)
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Confirm administrative credentialsReview who has administrative access to the router. Check if default credentials are still in use or if credentials may have been compromisedAffected if Administrative credentials are known to unauthorized users, default credentials are unchanged, or the admin account shows signs of compromise
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Check for suspicious user accounts or configurationsIn the web UI, navigate to User Management or Administration > User Accounts and review all configured accounts for unfamiliar entriesAffected if Unexpected administrative accounts exist or account configurations have been altered
You are affected if your router model is RV016, RV042, RV042G, RV082, RV320, or RV325, AND the firmware version is at or below 4.2.3.10 (for RV016/RV042/RV082) or 1.5.1.05 (for RV320/RV325), AND the web management interface is accessible to an attacker who could obtain administrative 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.
From vendor dataApply the relevant Cisco firmware updates for the affected router models. If patches are unavailable, restrict administrative access to trusted networks or disable the web management interface if not required.
Fix this in Rv016 Firmware
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 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 $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-3278 — 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-2020-3278 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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