CVE-2012-4787

Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers…

Critical · published December 12, 2012

CVSS v3.1
9.0
EPSS
18%
Percentile
97.1
In the wild
Unconfirmed
What it is

🔥 A sneaky use-after-free vulnerability in Internet Explorer 9 and 10 could let an attacker execute arbitrary code just by luring you to a crafted website! ⚠️ Think of it like leaving a toy out for a toddler — one moment it’s in their hands, and the next it’s gone. If they try to play with it after it’s been thrown away (or freed), all chaos breaks loose! This vulnerability can lead to devastating consequences, allowing attackers to take control of your system, steal sensitive information, or even install malicious software. A crafted website could exploit this flaw, creating a doorway for complete chaos at the click of a button!

Put simply

Think of it like leaving a toy out for a toddler — one moment it’s in their hands, and the next it’s gone. If they try to play with it after it’s been thrown away (or freed), all chaos breaks loose! The flaw occurs when Internet Explorer fails to properly manage the reference counting for certain objects, leading to instances where deleted or uninitialized objects are accessed, allowing malicious code execution.

What to do

This vulnerability can lead to devastating consequences, allowing attackers to take control of your system, steal sensitive information, or even install malicious software. A crafted website could exploit this flaw, creating a doorway for complete chaos at the click of a button! You must patch your systems immediately to versions that no longer include this vulnerability. Since it's related to an unsupported browser, consider disabling Internet Explorer altogether and transitioning to a more secure browser. 🛡️ You've got this! With a few quick updates, you can fortify your defenses and keep your systems secure! 🚀

The record
Technical detail
CVSS v3.1
9.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.17572 · 97.1th percentile
Published
2012-12-12T00:00Z
EPSS history
Timeline
  • 12 DEC 00:00Z
    Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers…
    cvelistv5