CVE-2019-1367KEV · OVERDUE

Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability

High · published September 23, 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 99.0th percentile for exploit probability.

1634
days past CISA
deadline
CVSS v3.1
7.5
EPSS
52%
Percentile
99.0
In the wild
Confirmed
What it is

🚨 Remote code execution in Internet Explorer is a real threat! A crafty exploit could let attackers manipulate your system via a memory corruption flaw. 🔥 Think of it like a chef who accidentally adds a secret ingredient to the recipe that ruins the entire dish — once that code is in there, it can take over the whole kitchen! If exploited, attackers could execute malicious code on your system, potentially leading to data theft, unauthorized access, or even complete system compromise. It’s like leaving the door wide open for intruders to waltz right in and do whatever they please!

Put simply

Think of it like a chef who accidentally adds a secret ingredient to the recipe that ruins the entire dish — once that code is in there, it can take over the whole kitchen! This vulnerability arises from the scripting engine mishandling objects in memory, allowing an attacker to execute arbitrary code on the affected system by sending specially crafted web content.

What to do

If exploited, attackers could execute malicious code on your system, potentially leading to data theft, unauthorized access, or even complete system compromise. It’s like leaving the door wide open for intruders to waltz right in and do whatever they please! To protect yourself, immediately disable any Internet Explorer instances and switch to a more secure browser. Additionally, ensure your systems are patched to the latest updates provided by Microsoft. Don't forget to educate users about the risks of outdated software! You've got this! By taking these steps, you'll keep your environment secure and robust! 🛡️

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
0.52449 · 99.0th percentile
Published
2019-09-23T19:14Z
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
  • 23 SEP 19:14Z
    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