CVE-2023-20025CWE-293

A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, and RV082 Routers could allow an unauthenticated, remote…

Critical · published January 19, 2023

CVSS v3.1
9.0
EPSS
2%
Percentile
74.7
In the wild
Unconfirmed
What it is

🚨 A crafty HTTP request could let attackers waltz right past your router's login! This vulnerability in Cisco's web management interface is a game-changer for RV016, RV042, RV042G, and RV082 routers. 🔥 Think of it like someone slipping through the check-in desk at a hotel without a reservation — the front desk staff doesn’t realize the guest hasn’t been registered, so they gain access to all the facilities! This flaw allows an attacker to bypass authentication and get root access as if they were a legitimate user. If exploited, this vulnerability could allow an attacker to gain full control over your router, which means they could alter settings, intercept network traffic, or even launch attacks on other devices in your network. The potential for chaos is absolutely devastating!

Put simply

Think of it like someone slipping through the check-in desk at a hotel without a reservation — the front desk staff doesn’t realize the guest hasn’t been registered, so they gain access to all the facilities! This flaw allows an attacker to bypass authentication and get root access as if they were a legitimate user. This vulnerability arises from improper validation of user input within HTTP packets sent to the web-based management interface, allowing an unauthenticated remote attacker to bypass authentication.

What to do

If exploited, this vulnerability could allow an attacker to gain full control over your router, which means they could alter settings, intercept network traffic, or even launch attacks on other devices in your network. The potential for chaos is absolutely devastating! To protect your network, patch your devices immediately to the latest firmware version provided by Cisco. Ensure you configure strong administrative credentials and limit access to the management interface from untrusted networks. You’ve got this! Keep your routers secure and your network safe! 🛡️

The record
Technical detail
CVSS v3.1
9.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01633 · 74.7th percentile
Weakness
CWE-293 · Using Referer Field for Authentication
Published
2023-01-19T01:33Z
EPSS history
Timeline
  • 19 JAN 01:33Z
    A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, and RV082 Routers could allow an unauthenticated, remote…
    cvelistv5