CVE-2010-0806KEV · OVERDUE

Microsoft Internet Explorer Use-After-Free Vulnerability

High · published March 10, 2010

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 99.7th percentile for exploit probability.

143
days past CISA
deadline
CVSS v3.1
8.8
EPSS
82%
Percentile
99.7
In the wild
Confirmed
What it is

⚡ A sneaky use-after-free vulnerability in Internet Explorer could let attackers pull off some devastating remote code execution tricks! 🚨 Think of this like a chef who removes a dish from the oven but forgets to clear the counter — it’s still hot, and someone could easily burn themselves grabbing it. In this case, attackers exploit an invalid pointer left behind, just waiting to cause chaos! This vulnerability is absolutely devastating: an attacker can execute arbitrary code on the affected system, potentially taking full control and compromising sensitive data. Imagine malicious software being able to run unrestrained, wreaking havoc without the user even knowing!

Put simply

Think of this like a chef who removes a dish from the oven but forgets to clear the counter — it’s still hot, and someone could easily burn themselves grabbing it. In this case, attackers exploit an invalid pointer left behind, just waiting to cause chaos! This use-after-free flaw in the iepeers.dll component of Internet Explorer allows unauthorized access to memory that has already been freed, leading to potential code execution with the privileges of the current user.

What to do

This vulnerability is absolutely devastating: an attacker can execute arbitrary code on the affected system, potentially taking full control and compromising sensitive data. Imagine malicious software being able to run unrestrained, wreaking havoc without the user even knowing! Immediate action is required: ensure you update Internet Explorer to the latest versions available, specifically targeting versions after the vulnerability was patched. Also, consider migrating away from deprecated browsers like IE to ensure better security in the long run. You've got this! By following these steps, you'll protect yourself from this vulnerability and strengthen your defenses. 🛡️

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
0.82241 · 99.7th percentile
Published
2010-03-10T22:00Z
KEV added
2026-05-20 · due 2026-06-03
EPSS history
Timeline
  • 20 MAY 00:00Z
    Added to CISA KEV — remediate by Jun 3
    kev
  • 10 MAR 22:00Z
    Use-after-free vulnerability in the Peer Objects component (aka iepeers.dll) in Microsoft Internet Explorer 6, 6 SP1, and 7 allows remote attackers to execute…
    cvelistv5