CVE-2021-1300CWE-119

Cisco SD-WAN Buffer Overflow Vulnerabilities

Critical · published January 20, 2021

CVSS v3.0
9.8
EPSS
2%
Percentile
82.1
In the wild
Unconfirmed
What it is

🚨 Unauthenticated attackers could take control of your Cisco SD-WAN devices! This set of vulnerabilities opens doors for remote exploits that could wreak havoc. 🔥 Think of these vulnerabilities like a hotel with an open backdoor that lets anyone wander in without checking ID — a recipe for chaos! Without proper safeguards, anyone could access sensitive areas, making it critical to secure those entrances. A malicious actor could potentially execute arbitrary commands on your affected devices, leading to unauthorized access, data leaks, or even complete control over your network. The consequences could be absolutely devastating for your organization's integrity and security!

Put simply

Think of these vulnerabilities like a hotel with an open backdoor that lets anyone wander in without checking ID — a recipe for chaos! Without proper safeguards, anyone could access sensitive areas, making it critical to secure those entrances. These vulnerabilities allow unauthenticated remote attackers to exploit flaws in Cisco SD-WAN products, enabling them to execute arbitrary code on the devices without needing to log in. This means they can cause substantial damage without ever setting foot in your network!

What to do

A malicious actor could potentially execute arbitrary commands on your affected devices, leading to unauthorized access, data leaks, or even complete control over your network. The consequences could be absolutely devastating for your organization's integrity and security! Immediate action is crucial! Update your Cisco SD-WAN products to the latest patch version recommended by Cisco to close these security gaps. Implement additional network monitoring to catch any suspicious activity in the meantime. You've got this! By taking these steps, you're on your way to securing your network and earning your security hero cape! 🦸‍♂️

The record
Technical detail
CVSS v3.0
9.8 · CRITICAL
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02159 · 82.1th percentile
Weakness
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer
Published
2021-01-20T19:55Z
EPSS history
Timeline
  • 20 JAN 19:55Z
    Cisco SD-WAN Buffer Overflow Vulnerabilities
    cvelistv5