CVE-2024-43461
Microsoft Windows MSHTML Platform Spoofing Vulnerability
Microsoft Windows
Windows MSHTML Platform Spoofing Vulnerability
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 16 September 2024. US federal agencies were required to remediate it by 7 October 2024.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 54.5%, which is higher than 99% 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:H/A:H
Frequently asked questions
Is CVE-2024-43461 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2024-43461.
What does CVE-2024-43461 affect?
CVE-2024-43461 affects Microsoft Windows. Windows MSHTML Platform Spoofing Vulnerability
How severe is CVE-2024-43461?
CVE-2024-43461 is rated HIGH with a CVSS base score of 8.8. EPSS puts the probability of exploitation in the next 30 days at 54.5%, higher than 99% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 7 October 2024.
How should organisations respond to CVE-2024-43461?
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.