CVE-2023-36025KEV · OVERDUE

Windows SmartScreen Security Feature Bypass Vulnerability

High · published November 14, 2023

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.

1053
days past CISA
deadline
CVSS v3.1
8.8
EPSS
88%
Percentile
99.8
In the wild
Confirmed
What it is

🚨 Windows SmartScreen can be bypassed with just a crafty file, opening the door for malware like an unlocked window on a stormy night! ⚡ Think of SmartScreen as a security guard at the entrance of a club. If the guard mistakenly lets in someone with a fake ID, that unvetted guest can wreak havoc on the dance floor without breaking a sweat! Attackers can exploit this vulnerability to run malicious software undetected, jeopardizing your system's security and potentially stealing sensitive data. This could lead to a full-scale compromise, leaving users with serious aftermath to deal with!

Put simply

Think of SmartScreen as a security guard at the entrance of a club. If the guard mistakenly lets in someone with a fake ID, that unvetted guest can wreak havoc on the dance floor without breaking a sweat! CVE-2023-36025 allows an attacker to bypass Windows SmartScreen's protection by crafting a specific file that tricks the system into allowing unauthorized access. This vulnerability undermines the protection layer that is supposed to keep your system safe from harmful software.

What to do

Attackers can exploit this vulnerability to run malicious software undetected, jeopardizing your system's security and potentially stealing sensitive data. This could lead to a full-scale compromise, leaving users with serious aftermath to deal with! Immediately apply the latest security updates released by Microsoft to remediate this vulnerability. Additionally, review your organization's security policies to ensure SmartScreen is enabled and functioning correctly to protect against bypass attempts. You've got this! Stay vigilant and patch up—your security hero status is just around the corner! 🛡️

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/E:F/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.88085 · 99.8th percentile
Published
2023-11-14T17:57Z
KEV added
2023-11-14 · due 2023-12-05
EPSS history
Timeline
  • 14 NOV 17:57Z
    Windows SmartScreen Security Feature Bypass Vulnerability
    cvelistv5
  • 14 NOV 00:00Z
    Added to CISA KEV — remediate by Dec 5
    kev