Is CVE-2013-5056 in the CISA KEV catalog?

No. CVE-2013-5056 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2013-5056?

CVE-2013-5056 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2013-5056?

CVE-2013-5056 has an EPSS score of 20.35% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2013-5056

HIGHEPSS 97th pctl

9.3

CVSS v2

NVD

Description

Use-after-free vulnerability in the Scripting Runtime Object Library in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site that is visited with Internet Explorer, aka "Use-After-Free Vulnerability in Microsoft Scripting Runtime Object Library."

CWE-416Use After Free

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

20.35%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-099

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.