CVE-2013-3896VulnerabilityPublished 05/25/2022Updated 10/24/2026

CVE-2013-3896: Microsoft Silverlight Information Disclosure Vulnerability

Affects Microsoft SilverlightSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 05/25/2022
KEV deadline: 06/15/2022
EPSS: 68.0% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

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

nvd.nist.gov/vuln/detail/CVE-2013-3896 (opens in a new tab)

Description

CVE-2013-3896 is an information disclosure vulnerability in Microsoft Silverlight caused by improper pointer validation when accessing Silverlight elements. This flaw allows remote attackers to obtain sensitive information by delivering a crafted Silverlight application. The vulnerability has been exploited in the wild, indicating active threat usage. No specific affected versions or patch information is provided in the available data.

Summary

Microsoft Silverlight contains a vulnerability (CVE-2013-3896) due to improper validation of pointers during access to Silverlight elements. This weakness enables remote attackers to craft malicious Silverlight applications that can disclose sensitive information from the affected system. The vulnerability is classified under CWE-20 (Improper Input Validation). Exploits have been observed in the wild, confirming active exploitation. No vendor advisory or patch details are provided in the input data.

Impact

Successful exploitation allows remote attackers to obtain sensitive information from systems running vulnerable versions of Microsoft Silverlight. This can lead to confidentiality breaches. The vulnerability has been exploited in the wild, demonstrating real-world impact.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor Microsoft security advisories for updates and consider disabling or restricting Silverlight usage where possible until a fix is confirmed.

Weaknesses

CWE-20Improper Input Validation (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:49:26 UTC

Weaknesses

References

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