CVE-2015-2419KEV · OVERDUE

Microsoft Internet Explorer Memory Corruption Vulnerability

High · published July 14, 2015

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 99.0th percentile for exploit probability.

1649
days past CISA
deadline
CVSS v3.1
8.8
EPSS
53%
Percentile
99.0
In the wild
Confirmed
What it is

🚨 A crafted website is enough to let attackers execute arbitrary code on your system! This JScript 9 vulnerability in Internet Explorer 10 and 11 is a game-changer, and it's surprisingly sneaky! 🔥 Think of it like a hotel with a broken security system that allows anyone to walk into any room without a key. That’s how this vulnerability lets an attacker sneak in and run whatever they want on your device—all because they crafted the perfect invitation (website). If exploited, an attacker can take complete control of your system, steal sensitive information, or even crash your browser entirely! This could lead to devastating data loss or unauthorized access to personal files, making it crucial to act fast.

Put simply

Think of it like a hotel with a broken security system that allows anyone to walk into any room without a key. That’s how this vulnerability lets an attacker sneak in and run whatever they want on your device—all because they crafted the perfect invitation (website). This vulnerability stems from memory corruption issues in JScript 9, allowing attackers to execute arbitrary code remotely when a user visits a malicious website. Essentially, it means the browser may run harmful commands that can control your system.

What to do

If exploited, an attacker can take complete control of your system, steal sensitive information, or even crash your browser entirely! This could lead to devastating data loss or unauthorized access to personal files, making it crucial to act fast. To protect yourself, immediately update your Internet Explorer to the latest version. Consider disabling JScript if possible, and ensure that your security software is up to date to provide additional layers of defense. You've got this! Follow these steps, and you’ll be one step closer to locking down your security! 🛡️

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
0.53127 · 99.0th percentile
Published
2015-07-14T21:00Z
KEV added
2022-03-28 · due 2022-04-18
EPSS history
Timeline
  • 28 MAR 00:00Z
    Added to CISA KEV — remediate by Apr 18
    kev
  • 14 JUL 21:00Z
    JScript 9 in Microsoft Internet Explorer 10 and 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a…
    cvelistv5