Microsoft Windows MSHTML Platform Remote Code Execution Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2021-11-03
• EPSS: 59% chance of exploitation in the next 30 days (higher than 99% of CVEs)

[ Description ]Official description

Windows MSHTML Platform Remote Code Execution Vulnerability

CISA: Microsoft Windows MSHTML Platform contains an unspecified vulnerability that allows for remote code execution.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 17 Nov 2021): Apply updates per vendor instructions.

• Patch on portal.msrc.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33742PatchVendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource