CVE-2024-43573
Microsoft Windows MSHTML Platform Spoofing Vulnerability
Microsoft Windows
Windows MSHTML Platform Spoofing Vulnerability
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 8 October 2024. US federal agencies were required to remediate it by 29 October 2024.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 46.1%, which is higher than 98.8% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Frequently asked questions
Is CVE-2024-43573 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2024-43573.
What does CVE-2024-43573 affect?
CVE-2024-43573 affects Microsoft Windows. Windows MSHTML Platform Spoofing Vulnerability
How severe is CVE-2024-43573?
CVE-2024-43573 is rated MEDIUM with a CVSS base score of 6.5. EPSS puts the probability of exploitation in the next 30 days at 46.1%, higher than 98.8% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 29 October 2024.
How should organisations respond to CVE-2024-43573?
Apply the vendor patch for Microsoft Windows as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.