CVE-2021-1294CWE-472

Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Execution Vulnerabilities

Critical · published February 4, 2021

CVSS v3.1
9.8
EPSS
5%
Percentile
91.5
In the wild
Unconfirmed
What it is

🚨 Unauthenticated access is all an attacker needs here! A crafty HTTP request to Cisco Small Business VPN Routers can lead to remote code execution with root privileges. 🔥 Think of the web management interface as a hotel front desk, where anyone can sidle up and request a room key without showing any ID. If the desk clerk doesn’t check credentials, anyone could waltz into any room and do as they please! An attacker could gain full control over the affected device, allowing them to execute arbitrary code. This could lead to a complete compromise of the network, potentially exposing sensitive data, modifying configurations, or launching further attacks within your infrastructure. The implications are absolutely devastating—think of the chaos of an open door at a hotel during a security breach!

Put simply

Think of the web management interface as a hotel front desk, where anyone can sidle up and request a room key without showing any ID. If the desk clerk doesn’t check credentials, anyone could waltz into any room and do as they please! This vulnerability arises from improper validation of HTTP requests in the web-based management interface of Cisco RV series VPN Routers. An attacker can exploit this by sending a specially crafted request to execute arbitrary commands as the root user on the device.

What to do

An attacker could gain full control over the affected device, allowing them to execute arbitrary code. This could lead to a complete compromise of the network, potentially exposing sensitive data, modifying configurations, or launching further attacks within your infrastructure. The implications are absolutely devastating—think of the chaos of an open door at a hotel during a security breach! Immediately patch your routers to the latest firmware version released by Cisco. Review all configurations and ensure that only trusted sources have access to the management interface, ideally limiting access to known IP addresses. Implementing additional network security measures, such as firewalls, can help mitigate potential exploitation. You’ve got this! Take these steps now to secure your devices and keep your network safe. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.04521 · 91.5th percentile
Weakness
CWE-472 · External Control of Assumed-Immutable Web Parameter
Published
2021-02-04T16:56Z
EPSS history
Timeline
  • 04 FEB 16:56Z
    Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Execution Vulnerabilities
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