Microsoft Internet Explorer Use-After-Free Vulnerability

Added to KEV
2022-05-04
Federal due date
2022-05-25
Vendor
Microsoft
Product
Internet Explorer
EPSS
99.8th percentile (score 0.930, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2014-0322

CISA short description

Use-after-free vulnerability in Microsoft Internet Explorer allows remote attackers to execute code.

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.