CVE-2021-27085

high Microsoft ⚠️ CISA KEV — Exploited in the Wild
CVSS v3 Base Score
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L
EPSS Score
3.7%
Exploitation probability in 30 days
Top 11% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
Low
Integrity
High
Availability
Low
Published: March 11, 2021 (2006 days ago)
Last Modified: August 19, 2026
Vendor: Microsoft
Source: NVD

⚠️ CISA Known Exploited Vulnerability

Added to KEV: 2021-11-03
Remediation Due: 2021-11-17 (⚠ 1756d overdue)

Description

Internet Explorer Remote Code Execution Vulnerability

CWE

NVD-CWE-noinfo

Affected Products

microsoft internet explorer

References

🔗 msrc.microsoft.com 🔗 portal.msrc.microsoft.com 🔗 www.cisa.gov