CVE-2024-21351: Microsoft Windows SmartScreen Security Feature Bypass Vulnerability

CISA Known Exploited Vulnerability (KEV)

Description

Microsoft Windows SmartScreen contains a security feature bypass vulnerability that allows an attacker to bypass the SmartScreen user experience and inject code to potentially gain code execution, which could lead to some data exposure, lack of system availability, or both.

Required action (CISA)

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Notes

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2024-21351; https://nvd.nist.gov/vuln/detail/CVE-2024-21351

Weakness behind it

CISA records this vulnerability as an instance of CWE-94. From there the chain continues into CAPEC attack patterns and ATT&CK techniques, all inside this corpus.

References

• NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-21351
• KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog