Microsoft Internet Explorer Privilege Escalation Vulnerability

Added to KEV
2022-05-24
Federal due date
2022-06-14
Vendor
Microsoft
Product
Internet Explorer
EPSS
97.6th percentile (score 0.430, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2017-0210

CISA short description

A privilege escalation vulnerability exists when Internet Explorer does not properly enforce cross-domain policies, which could allow an attacker to access information.

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.