CVE-2020-6418KEV · OVERDUE

Google Chromium V8 Type Confusion Vulnerability

High · published February 27, 2020

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 8.8. It is confirmed in active exploitation. It sits in the 99.6th percentile for exploit probability.

1636
days past CISA
deadline
CVSS v3.1
8.8
EPSS
79%
Percentile
99.6
In the wild
Confirmed
What it is

🚨 A sneaky type confusion flaw in Google Chrome puts you on the edge! An attacker could exploit this just by sneaking in a crafted HTML page. ⚡ Think of it like a waiter who mixes up the orders in the kitchen, serving the wrong dishes to the wrong tables. In this case, the browser's inability to handle types properly can lead to heap corruption, creating a feast for attackers! Once exploited, a remote attacker could potentially execute arbitrary code on your system. This means they could gain control over your device, steal sensitive data, or even crash your browser entirely — absolutely devastating!

Put simply

Think of it like a waiter who mixes up the orders in the kitchen, serving the wrong dishes to the wrong tables. In this case, the browser's inability to handle types properly can lead to heap corruption, creating a feast for attackers! This type confusion vulnerability in V8 allows attackers to manipulate how objects are treated in memory, potentially leading to heap corruption. By serving a specially crafted HTML page, they can cause the browser to misinterpret data structures, opening the door for exploitation.

What to do

Once exploited, a remote attacker could potentially execute arbitrary code on your system. This means they could gain control over your device, steal sensitive data, or even crash your browser entirely — absolutely devastating! To safeguard against this vulnerability, update your Google Chrome to version 80.0.3987.122 or later. Regularly check for updates and ensure that auto-updates are enabled. Don't forget to review your browsing practices to avoid suspicious pages! You've got this! Keep your browser up to date, and you'll stay ahead of the game! 🛡️

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.78808 · 99.6th percentile
Published
2020-02-27T22:55Z
KEV added
2021-11-03 · due 2022-05-03
EPSS history
Timeline
  • 03 NOV 00:00Z
    Added to CISA KEV — remediate by May 3
    kev
  • 27 FEB 22:55Z
    Type confusion in V8 in Google Chrome prior to 80.0.3987.122 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page
    cvelistv5