known ransomware use

Microsoft Silverlight Double Dereference Vulnerability

Added to KEV
2022-05-25
Federal due date
2022-06-15
Vendor
Microsoft
Product
Silverlight
EPSS
99.8th percentile (score 0.932, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Known
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2013-0074

CISA short description

Microsoft Silverlight does not properly validate pointers during HTML object rendering, which allows remote attackers to execute code via a crafted Silverlight application.

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.