High (8.1) in Microsoft Edge and Internet Explorer. In CISA KEV since 2022-03-28. EPSS 80% chance of exploitation in the next 30 days.
Microsoft Internet Explorer 10 and 11 and Microsoft Edge have a type confusion issue in the Layout::MultiColumnBoxBuilder::HandleColumnBreakOnColumnSpanningElement function in mshtml.dll, which allows remote attackers to execute arbitrary code via vectors involving a crafted Cascading Style Sheets (CSS) token sequence and crafted JavaScript code that operates on a TH element.
Severity
CVSS 3.1
8.1 high
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
80% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)