VulnerabilityAnalyzed
CVE-2023-24880
Microsoft Windows SmartScreen Security Feature Bypass Vulnerability
KEVMEDIUM 4.4EPSS 78.2%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 4 April 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Windows SmartScreen Security Feature Bypass Vulnerability
- CVSS 3.1
- 4.4 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
- EPSS
- 78.15% probability · 100th percentile
- CISA KEV
- Listed 14 March 2023 · due 4 April 2023 · used in ransomware campaigns
- Weakness
- CWE-863
- Affected
- microsoft/windows 10 1607 · microsoft/windows 10 1809 · microsoft/windows 10 20h2 · microsoft/windows 10 21h2 · microsoft/windows 10 22h2 · microsoft/windows 11 21h2 · microsoft/windows 11 22h2 · microsoft/windows server 2016 · microsoft/windows server 2019 · microsoft/windows server 2022
- Source
- secure@microsoft.com
CISA notes
Apply updates per vendor instructions. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-24880; https://nvd.nist.gov/vuln/detail/CVE-2023-24880
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24880Patch, Vendor Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24880Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-24880US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.