Rv110w FirmwareOperating system · Cisco

CVE-2019-1663

CRITICAL · 9.8 CVSS v3.1 Published 2019-02-28
Fix available
A fix is available. Upgrade to 1.0.3.45 / 1.2.2.1 or later.
See remediation →
100/100
Remediation priority · Urgent
High EPSS Public exploit Remotely reachable No privileges 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
A vulnerability in the web-based management interface of the Cisco RV110W Wireless-N VPN Firewall, Cisco RV130W Wireless-N Multifunction VPN Router, and Cisco RV215W Wireless-N VPN Router could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. The vulnerability is due to improper validation of user-supplied data in the web-based management interface. An attacker could exploit this vulnerability by sending malicious HTTP requests to a targeted device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system of the affected device as a high-privilege user. RV110W Wireless-N VPN Firewall versions prior to 1.2.2.1 are affected. RV130W Wireless-N Multifunction VPN Router versions prior to 1.0.3.45 are affected. RV215W Wireless-N VPN Router versions prior to 1.3.1.1 are affected.

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
How this class of weakness works · CWE-119

The program reads or writes outside the bounds of an allocated buffer, corrupting adjacent memory. With crafted input an attacker can overwrite control data and, with effort, redirect execution to their own code. Remediation ranges from bounds checking and safe library functions to compiler mitigations, usually alongside a careful audit of the surrounding code.

General guidance for the memory buffer bounds error class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
Rv110w FirmwareOperating system
Affected:< 1.2.2.1
Rv130w FirmwareOperating system
Affected:< 1.0.3.45
Rv215w FirmwareOperating system
Affected:< 1.3.1.1

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
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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
Upgrade available Upgrade to 1.0.3.45 / 1.2.2.1 / 1.3.1.1 or later
Fixed in 1.0.3.451.2.2.11.3.1.1
Recommended fix High confidence

Rv110W: 1.2.2.1+ | Rv130W: 1.0.3.45+ | Rv215W: 1.3.1.1+

  1. 1. Identify the exact Cisco router model (RV110W, RV130W, or RV215W) from the device label
  2. 2. Access the device's web-based management interface by entering the router's IP address in a web browser
  3. 3. Navigate to the Administration or System section of the web interface
  4. 4. Locate the Firmware Upgrade or Router Upgrade option
  5. 5. Download the appropriate fixed firmware version from Cisco's official support site: RV110W version 1.2.2.1 or later, RV130W version 1.0.3.45 or later, RV215W version 1.3.1.1 or later
  6. 6. Upload the firmware file through the web interface and wait for the upgrade process to complete
  7. 7. After the device reboots, verify the firmware version in the web interface to confirm the upgrade was successful
  8. 8. Reconfigure any custom settings that may have been reset to factory defaults
Caveat Firmware upgrades may reset configuration to defaults; back up current configuration before upgrading and reapply after successful upgrade

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

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $3,550. Get the upgrade done

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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-2019-1663 in production — separate from our analysis above.

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