CVE-2013-3178

CVE-2013-3178 is a critical-severity vulnerability in Microsoft Silverlight with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 32% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Description

Microsoft Silverlight 5 before 5.1.20513.0 does not properly initialize arrays, which allows remote attackers to execute arbitrary code or cause a denial of service (NULL pointer dereference) via a crafted Silverlight application, aka "Null Pointer Vulnerability."

Frequently asked questions

What is CVE-2013-3178?
Microsoft Silverlight 5 before 5.1.20513.0 does not properly initialize arrays, which allows remote attackers to execute arbitrary code or cause a denial of service (NULL pointer dereference) via a crafted Silverlight application, aka "Null Pointer Vulnerability."
How severe is CVE-2013-3178?
CVE-2013-3178 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2013-3178 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 32% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3178?
CVE-2013-3178 primarily affects Microsoft Silverlight. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-3178?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2013-3178 published?
CVE-2013-3178 was published on 2013-07-10 and last updated on 2026-06-16.

References

Affected products (6)

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