CVE-2024-43573KEV · OVERDUECWE-79

Windows MSHTML Platform Spoofing Vulnerability

Medium · published October 8, 2024

Patch now

The score understates this — it's already being exploited

CVSS calls it medium at 6.5. It is confirmed in active exploitation. It sits in the 98.8th percentile for exploit probability.

724
days past CISA
deadline
CVSS v3.1
6.5
EPSS
46%
Percentile
98.8
In the wild
Confirmed
What it is

⚠️ A clever spoofing vulnerability is lurking in the Windows MSHTML platform. It can mislead users into thinking they're visiting a trusted site when they’re not! 🚨 Think of it like a restaurant that has a fake front—everything looks legit, but once you step inside, it’s a completely different experience. The issue here allows attackers to present malicious content disguised as trustworthy webpages. If exploited, this vulnerability could lead to users being tricked into revealing sensitive information or downloading harmful software, all while believing they’re safe. It’s like being served a delightful-looking dessert that’s actually filled with something suspicious!

Put simply

Think of it like a restaurant that has a fake front—everything looks legit, but once you step inside, it’s a completely different experience. The issue here allows attackers to present malicious content disguised as trustworthy webpages. This vulnerability allows attackers to spoof content in the MSHTML platform, potentially tricking users into executing untrusted scripts or actions without their knowledge. It’s a classic case of misrepresentation that can compromise user security.

What to do

If exploited, this vulnerability could lead to users being tricked into revealing sensitive information or downloading harmful software, all while believing they’re safe. It’s like being served a delightful-looking dessert that’s actually filled with something suspicious! Make sure to update Windows to the latest version to patch this vulnerability and educate users about the risks of clicking on suspicious links. Consider implementing robust security awareness training to help users recognize potential spoofing attempts. You've got this! By taking these steps, you're one step closer to keeping your digital environment safe. 🛡️

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.46109 · 98.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2024-10-08T17:35Z
KEV added
2024-10-08 · due 2024-10-29
EPSS history
Timeline
  • 08 OCT 17:35Z
    Windows MSHTML Platform Spoofing Vulnerability
    cvelistv5
  • 08 OCT 00:00Z
    Added to CISA KEV — remediate by Oct 29
    kev