Microsoft Internet Explorer Use-After-Free Vulnerability

Added to KEV
2022-06-08
Federal due date
2022-06-22
Vendor
Microsoft
Product
Internet Explorer
EPSS
99.7th percentile (score 0.918, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2012-4969

CISA short description

Microsoft Internet Explorer contains a use-after-free vulnerability that allows remote attackers to execute code via a crafted web site.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.