CVE-2021-1602

Cisco Small Business RV160 and RV260 Series VPN Routers Remote Command Execution Vulnerability

CRITICAL
9.8
CVSS Score
Published: August 4, 2021 at 05:20 PM UTC
Updated: June 17, 2026 at 03:32 AM UTC
6 products affected across 1 vendorSmall Business Rv Series Router FirmwareSmall Business Rv160WSmall Business Rv260W

Using Cisco Small Business RV Series Router Firmware by Cisco?

Get instant alerts when new vulnerabilities affect Cisco Small Business RV Series Router Firmware - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
CRITICAL9.8
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

A vulnerability in the web-based management interface of Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. This vulnerability is due to insufficient user input validation. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to execute arbitrary commands on an affected device using root-level privileges. Due to the nature of the vulnerability, only commands without parameters can be executed.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.0.01.04
Affected range stops below 1.0.01.04, so it looks safe — our inference, not a vendor statement
cisco-small-business-rv160 (environment) · cisco-small-business-rv160w (environment) · cisco-small-business-rv260 (environment) · cisco-small-business-rv260p (environment) · cisco-small-business-rv260w (environment)
All versions
All versions
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-78CWE-20

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card