CVE-2024-21412: Microsoft Windows Internet Shortcut Files Security Feature Bypass Vulnerability
Affects Microsoft WindowsSource CISA KEV
Exploited in the wild · used in ransomware campaigns · KEV due 5 Mar 2024 · 99% EPSS : apply the vendor's fix or mitigations to Microsoft Windows now.
Data as of 10/24/2026, 22:15:59 UTC
- Exploitation
Actively exploited – in CISA KEV since 02/13/2024
- KEV deadline
- 03/05/2024 US federal agencies must patch by this date; a sensible deadline for everyone else.
- Ransomware
- Used in ransomware campaigns
- EPSS
- 99.4% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:F/RL:O/RC:CWhat to do
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Description
Microsoft Windows Internet Shortcut Files contains an unspecified vulnerability that allows for a security feature bypass.
Weaknesses
- CWE-693Protection Mechanism Failure (opens in a new tab)
Pillar weaknessOWASP Top 10 A06:2025: Insecure Design (opens in a new tab)
The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.