CVE-2017-8464KEV · OVERDUE

Microsoft Windows Shell (.lnk) Remote Code Execution Vulnerability

High · published June 15, 2017

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 99.8th percentile for exploit probability.

1534
days past CISA
deadline
CVSS v3.1
8.8
EPSS
90%
Percentile
99.8
In the wild
Confirmed
What it is

🚨 A crafted .LNK file is the key to remote code execution in several Windows versions, just waiting for a friendly click! ⚡ Think of this vulnerability like a Trojan horse; it looks harmless on the outside but, once opened, it allows the attacker to unleash chaos inside your system. Just as a guest might mistakenly invite trouble by letting in a deceptive package, users might unwittingly execute malicious code by interacting with these shortcuts. An attacker can execute arbitrary code on the affected system just by tricking a user into opening a malicious shortcut. This could lead to full system compromise — stealing data, installing malware, or even taking complete control of the system! It's a potential nightmare for security!

Put simply

Think of this vulnerability like a Trojan horse; it looks harmless on the outside but, once opened, it allows the attacker to unleash chaos inside your system. Just as a guest might mistakenly invite trouble by letting in a deceptive package, users might unwittingly execute malicious code by interacting with these shortcuts. This vulnerability allows local users or remote attackers to execute arbitrary code via a specially crafted .LNK file that is mishandled during icon display in Windows Explorer or other applications. Essentially, the system doesn't properly validate the shortcut, leading to potential exploits.

What to do

An attacker can execute arbitrary code on the affected system just by tricking a user into opening a malicious shortcut. This could lead to full system compromise — stealing data, installing malware, or even taking complete control of the system! It's a potential nightmare for security! To protect your systems, patch to the latest updates released by Microsoft for the affected versions. Disable the execution of potentially harmful .LNK files when possible, and educate users on the risks of opening unknown shortcuts. Don’t let this vulnerability linger! You’ve got this! Follow these steps and you'll fortify your defenses against this sneaky exploit! 🛡️

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
0.90026 · 99.8th percentile
Published
2017-06-15T01:00Z
KEV added
2022-02-10 · due 2022-08-10
EPSS history
Timeline
  • 10 FEB 00:00Z
    Added to CISA KEV — remediate by Aug 10
    kev
  • 15 JUN 01:00Z
    Windows Shell in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows…
    cvelistv5