CVE-2022-20841CWE-120

Cisco Small Business RV Series Routers Vulnerabilities

Critical · published August 10, 2022

CVSS v3.1
9.0
EPSS
3%
Percentile
88.5
In the wild
Unconfirmed
What it is

🚨 A simple web request is all it takes for attackers to roll the dice on your Cisco router! 🔥 Think of it like a sneaky kid who finds a way to bypass the front desk of a hotel — they can access any room without any credentials, causing chaos in the process. This vulnerability lets an attacker execute arbitrary code or crash your router, just like that kid wreaking havoc in the hotel! An attacker could potentially gain full control over the router, allowing them to manipulate settings or intercept sensitive data, which is absolutely devastating! Worse yet, they could trigger a denial of service (DoS) condition, bringing your network to a grinding halt. Your devices could become playgrounds for malicious activity. 😱

Put simply

Think of it like a sneaky kid who finds a way to bypass the front desk of a hotel — they can access any room without any credentials, causing chaos in the process. This vulnerability lets an attacker execute arbitrary code or crash your router, just like that kid wreaking havoc in the hotel! This vulnerability affects Cisco Small Business RV160, RV260, RV340, and RV345 routers, enabling unauthenticated remote attackers to execute arbitrary code or initiate a DoS attack due to insufficient input validation. It’s a serious security hole that could expose your network to a range of threats.

What to do

An attacker could potentially gain full control over the router, allowing them to manipulate settings or intercept sensitive data, which is absolutely devastating! Worse yet, they could trigger a denial of service (DoS) condition, bringing your network to a grinding halt. Your devices could become playgrounds for malicious activity. 😱 Immediate action is crucial! Update your routers to the latest firmware version as recommended by Cisco to patch this vulnerability. Additionally, consider implementing strong firewall rules and restricting remote management interfaces to trusted IPs only. 🛡️ You’ve got this! Take these steps, and you’ll fortify your network against these sneaky vulnerabilities. 💪✨

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
0.03327 · 88.5th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2022-08-10T08:10Z
EPSS history
Timeline
  • 10 AUG 08:10Z
    Cisco Small Business RV Series Routers Vulnerabilities
    cvelistv5