Is CVE-2013-3163 being actively exploited?

Yes. CVE-2013-3163 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on March 30, 2023.

What is the CVSS score for CVE-2013-3163?

CVE-2013-3163 has a CVSS 3.1 base score of 8.8 (HIGH).

CVE-2013-3163

HIGH · CVSS 8.8CISA KEV: actively exploitedEPSS 70.7%EU EUVD: exploited

Microsoft Internet Explorer 8 through 10 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability," a different vulnerability than CVE-2013-3144 and CVE-2013-3151.

Key facts

CVSS score: 8.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-787
EPSS score: 70.7% (99th percentile)
In CISA KEV: Yes, added March 30, 2023
In EU EUVD: Yes (EUVD-2013-3101)
Published: July 10, 2013
NVD last modified: June 16, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Microsoft Internet Explorer Memory Corruption Vulnerability

Added to the KEV catalog on March 30, 2023; federal remediation due April 20, 2023.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-3101 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 22, 2025.

View on the EU Vulnerability Database

Affected products

microsoft / internet explorer
microsoft / internet explorer
microsoft / internet explorer
microsoft / windows 7
microsoft / windows 8
microsoft / windows rt
microsoft / windows server 2003
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2012
microsoft / windows vista
microsoft / windows xp
microsoft / windows xp

References

http://www.us-cert.gov/ncas/alerts/TA13-190A(Third Party Advisory, US Government Resource)
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-055(Patch, Vendor Advisory)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17363(Broken Link)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-3163(US Government Resource)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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