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Rvs4000Hardware / appliance · Cisco

CVE-2011-1646

HIGH · 9.0 CVSS v2.0 Published 2011-05-31
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
96/100
Remediation priority · Urgent
Remotely reachable Zero-click

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 · unedited
The web management interface on the Cisco RVS4000 Gigabit Security Router with software 1.x before 1.3.3.4 and 2.x before 2.0.2.7, and the WRVS4400N Gigabit Security Router with software before 2.0.2.1, allows remote authenticated users to execute arbitrary commands via the (1) ping test parameter or (2) traceroute test parameter, aka Bug ID CSCtn23871.

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 confidence

Command injection vulnerability in the web management interface of Cisco RVS4000 and WRVS4400N Gigabit Security Routers allows authenticated users to execute arbitrary operating system commands via the ping and traceroute test parameters.

MitigationUpgrade router firmware to version 1.3.3.4 or later for RVS4000 1.x, 2.0.2.7 or later for RVS4000 2.x, or 2.0.2.1 or later for WRVS4400N. If patching is not feasible, restrict web management interface access to trusted administrative networks only.

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
Rvs4000Hardware / appliance
Affected:= 1= 2
Rvs4000 SoftwareApplication
Affected:= 1.3.0.5= 1.3.1.0= 1.3.2.0= 2.0.0.3
Wrvs4400nHardware / appliance
Affected:= 1.0= 1.1= 2
Wrvs4400n SoftwareApplication
Affected:= 1.3.0.5= 1.3.1.0= 1.3.2.0= 2.0.0.3

CVSS 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
Authentication
Single
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:L/Au:S/C:C/I:C/A:C

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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify the router model
    Check the device label or web interface header for the exact model number (RVS4000 or WRVS4400N)
    Affected if The model is Cisco RVS4000 or WRVS4400N
  2. Determine the firmware version
    Access the router web management interface and navigate to the Administration or Status section to view the firmware/software version
    Affected if The firmware version is 1.3.0.5, 1.3.1.0, 1.3.2.0, or 2.0.0.3
  3. Verify the web management interface is enabled
    Check router settings for HTTP/HTTPS management access status
    Affected if The web management interface is accessible (enabled)
  4. Confirm ping or traceroute functionality is accessible
    Locate the Diagnostic or Administration tools section in the web interface where ping and traceroute tests are provided
    Affected if The ping or traceroute test feature is available and accessible to authenticated users

You are affected if you have a Cisco RVS4000 or WRVS4400N router running firmware version 1.3.0.5, 1.3.1.0, 1.3.2.0, or 2.0.0.3 with the web management interface enabled and ping/traceroute functionality accessible.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade router firmware to version 1.3.3.4 or later for RVS4000 1.x, 2.0.2.7 or later for RVS4000 2.x, or 2.0.2.1 or later for WRVS4400N. If patching is not feasible, restrict web management interface access to trusted administrative networks only.

Recommended fix High confidence

RVS4000: upgrade to 1.3.3.4 (for 1.x) or 2.0.2.7 (for 2.x); WRVS4400N: upgrade to 2.0.2.1 or later

  1. 1. Identify the current installed firmware version on the Cisco RVS4000 or WRVS4400N router via the web management interface or console.
  2. 2. Access the Cisco software download page for RVS4000 or WRVS4400N routers using the product's official support page.
  3. 3. Download the appropriate fixed firmware version: For RVS4000 1.x, download version 1.3.3.4 or later; for RVS4000 2.x, download version 2.0.2.7 or later; for WRVS4400N, download version 2.0.2.1 or later.
  4. 4. Access the router's web management interface and navigate to the Administration > Firmware Upgrade section.
  5. 5. Upload and apply the fixed firmware version, ensuring stable power during the upgrade process.
  6. 6. After the router reboots, verify the new firmware version is installed and test that the ping and traceroute functions work correctly.
  7. 7. Consider changing administrator passwords after the upgrade as a precautionary measure, since this was an authenticated command injection vulnerability.
Caveat Router firmware upgrades may temporarily disrupt network connectivity; ensure backup of configuration before upgrading; some legacy features may behave differently in new firmware versions

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Rvs4000 Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2011-1646 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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  • No spam, self-promotion, credentials, or personal data