CVE-2023-24880KEV · OVERDUE

Windows SmartScreen Security Feature Bypass Vulnerability

Medium · published March 14, 2023

Patch now

The score understates this — it's already being exploited

CVSS calls it medium at 4.4. It is confirmed in active exploitation. It sits in the 99.6th percentile for exploit probability.

1298
days past CISA
deadline
CVSS v3.1
4.4
EPSS
78%
Percentile
99.6
In the wild
Confirmed
What it is

⚠️ A clever trick lets attackers slip past the Windows SmartScreen like a sneaky guest at a party! 🎉 Picture SmartScreen as a bouncer at a nightclub checking IDs, but this vulnerability allows someone to waltz right in without proper verification — it's like wearing a fake mustache and claiming to be on the VIP list, and nobody checks! If exploited, this vulnerability could let attackers run malicious applications without triggering any warnings, putting users at serious risk. Imagine opening a door thinking it's safe, only to find an unwelcome visitor lurking inside, ready to cause chaos!

Put simply

Picture SmartScreen as a bouncer at a nightclub checking IDs, but this vulnerability allows someone to waltz right in without proper verification — it's like wearing a fake mustache and claiming to be on the VIP list, and nobody checks! This vulnerability occurs when the SmartScreen feature fails to properly enforce security checks, allowing attackers to bypass these safeguards and run unverified applications.

What to do

If exploited, this vulnerability could let attackers run malicious applications without triggering any warnings, putting users at serious risk. Imagine opening a door thinking it's safe, only to find an unwelcome visitor lurking inside, ready to cause chaos! To safeguard your systems, ensure your Windows OS is updated to the latest patch. Keep an eye on security advisories to apply any relevant updates immediately. It's also a good idea to educate users about the potential risks of running unknown applications. 🛡️ You've got this! By following these steps, you can keep your environment safe and sound. 🌟

The record
Technical detail
CVSS v3.1
4.4 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:F/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.78005 · 99.6th percentile
Published
2023-03-14T16:55Z
KEV added
2023-03-14 · due 2023-04-04
EPSS history
Timeline
  • 14 MAR 16:55Z
    Windows SmartScreen Security Feature Bypass Vulnerability
    cvelistv5
  • 14 MAR 00:00Z
    Added to CISA KEV — remediate by Apr 4
    kev