Microsoft Internet Explorer Memory Corruption Vulnerability

Added to KEV
2023-03-30
Federal due date
2023-04-20
Vendor
Microsoft
Product
Internet Explorer
EPSS
99.3th percentile (score 0.846, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2013-3163

CISA short description

Microsoft Internet Explorer contains a memory corruption vulnerability that allows remote attackers to execute code or cause a denial of service via a crafted website.

Required action

The impacted product is end-of-life and should be disconnected if still in use.

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.