SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2013-0074

Microsoft Silverlight Double Dereference Vulnerability

KEVHIGH 7.8EPSS 81.0%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 15 June 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Microsoft Silverlight 5, and 5 Developer Runtime, before 5.1.20125.0 does not properly validate pointers during HTML object rendering, which allows remote attackers to execute arbitrary code via a crafted Silverlight application, aka "Silverlight Double Dereference Vulnerability."

CVSS 3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
81.01% probability · 100th percentile
CISA KEV
Listed 25 May 2022 · due 15 June 2022 · used in ransomware campaigns
Affected
microsoft/silverlight
Source
secure@microsoft.com

CISA notes

The impacted product is end-of-life and should be disconnected if still in use. https://nvd.nist.gov/vuln/detail/CVE-2013-0074

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.