CVE-2019-1429KEV · OVERDUE

Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability

High · published November 12, 2019

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.5. It is confirmed in active exploitation. It sits in the 99.6th percentile for exploit probability.

1634
days past CISA
deadline
CVSS v3.1
7.5
EPSS
77%
Percentile
99.6
In the wild
Confirmed
What it is

🚨 A single crafted web page can trigger a memory corruption flaw in Internet Explorer, allowing attackers to execute code remotely! ⚡ Think of this as a recipe gone wrong in a restaurant kitchen where a rogue chef can sneak in and change the ingredients without anyone noticing. If they add the wrong spice, it could completely alter the dish's flavor — and here, that dish is your system's security! An attacker could take over your system, reading sensitive data, installing malware, or even damaging your files. This isn’t just a little bug; it’s like leaving the front door wide open! Immediate exploitation has been reported, so the stakes are high!

Put simply

Think of this as a recipe gone wrong in a restaurant kitchen where a rogue chef can sneak in and change the ingredients without anyone noticing. If they add the wrong spice, it could completely alter the dish's flavor — and here, that dish is your system's security! This vulnerability arises from the way Internet Explorer's scripting engine mishandles objects in memory, allowing an attacker to execute arbitrary code by tricking a user into visiting a malicious web page.

What to do

An attacker could take over your system, reading sensitive data, installing malware, or even damaging your files. This isn’t just a little bug; it’s like leaving the front door wide open! Immediate exploitation has been reported, so the stakes are high! To protect yourself, update Internet Explorer to the latest version immediately and consider moving to more secure browsers. It's also a good idea to educate users about the dangers of clicking unknown links! You've got this! Follow these steps, and you'll help keep the internet safe and sound! 🛡️

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.77290 · 99.6th percentile
Published
2019-11-12T18:53Z
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
  • 12 NOV 18:53Z
    A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka 'Scripting Engine Memory…
    cvelistv5