November 3, 2021 · Applied Cybernetics Group
CVE-2021-27085 — Microsoft Internet Explorer
Microsoft Internet Explorer Remote Code Execution Vulnerability
- Added to KEV
2021-11-03- Federal due date
2021-11-17- Vendor
- Microsoft
- Product
- Internet Explorer
- EPSS
- 92.3th percentile (score 0.054, as of
2026-09-16) - NVD CVSS v3.1
- 8.8 (HIGH)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-27085
CISA short description
Microsoft Internet Explorer contains an unspecified vulnerability that allows for remote code execution.
Required action
Apply updates per vendor instructions.
NVD description
Internet Explorer Remote Code Execution Vulnerability