CVE-2021-26411: Microsoft Internet Explorer Memory Corruption Vulnerability

High severity, CVSS 8.8. Actively exploited: in CISA KEV since 2021-11-03. EPSS: 80.8% chance of exploitation in the next 30 days.

Internet Explorer Memory Corruption Vulnerability

Affected products

• Microsoft Edge: affected versions not specified
• Microsoft Internet Explorer: version 11 only; version 9 only

Published 2021-03-11. Last modified 2026-10-01.