CVE-2021-21940CWE-122

A heap-based buffer overflow vulnerability exists in the pushMuxer processRtspInfo functionality of Anker Eufy Homebase 2 2.1.6.9h

Critical · published October 12, 2021

CVSS v3.0
10.0
EPSS
1%
Percentile
71.0
In the wild
Unconfirmed
What it is

🚨 A specially-crafted packet can trigger a heap buffer overflow in Anker Eufy Homebase 2! It’s like a delivery driver dropping a bombshell package in your living room — chaos awaits! 🔥 Think of this vulnerability as a mischievous delivery that, instead of the expected package, drops a ticking time bomb right in the middle of your home. If the delivery isn’t inspected, it can explode—causing serious damage to your device’s memory! An attacker could exploit this vulnerability to execute arbitrary code on your Homebase 2, potentially compromising your entire smart home setup. This could mean unauthorized access to your devices, loss of data, or even shutting down your system entirely. The consequences are absolutely devastating!

Put simply

Think of this vulnerability as a mischievous delivery that, instead of the expected package, drops a ticking time bomb right in the middle of your home. If the delivery isn’t inspected, it can explode—causing serious damage to your device’s memory! This heap-based buffer overflow occurs in the pushMuxer process's RtspInfo functionality, allowing attackers to send a specially-crafted network packet that overflows the memory, leading to unpredictable behavior.

What to do

An attacker could exploit this vulnerability to execute arbitrary code on your Homebase 2, potentially compromising your entire smart home setup. This could mean unauthorized access to your devices, loss of data, or even shutting down your system entirely. The consequences are absolutely devastating! To protect yourself, immediately update to the patched version 2.1.6.10 or later. Regularly audit your network traffic for any suspicious packets and consider implementing firewall rules to restrict access. Keep your systems updated to prevent future vulnerabilities! You’ve got this! By following these steps, you’ll be well on your way to securing your smart home. 🛡️

The record
Technical detail
CVSS v3.0
10.0 · CRITICAL
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01335 · 71.0th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2021-10-12T13:35Z
EPSS history
Timeline
  • 12 OCT 13:35Z
    A heap-based buffer overflow vulnerability exists in the pushMuxer processRtspInfo functionality of Anker Eufy Homebase 2 2.1.6.9h
    cvelistv5