Is CVE-2013-3893 being actively exploited?

Yes. CVE-2013-3893 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on August 12, 2025.

What is the CVSS score for CVE-2013-3893?

CVE-2013-3893 has a CVSS 3.1 base score of 8.8 (HIGH).

CVE-2013-3893

HIGH · CVSS 8.8CISA KEV: actively exploitedEPSS 87.6%EU EUVD: exploited

Use-after-free vulnerability in the SetMouseCapture implementation in mshtml.dll in Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code via crafted JavaScript strings, as demonstrated by use of an ms-help: URL that triggers loading of hxds.dll.

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-416
EPSS score: 87.6% (100th percentile)
In CISA KEV: Yes, added August 12, 2025
In EU EUVD: Yes (EUVD-2013-3825)
Published: September 18, 2013
NVD last modified: June 16, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Microsoft Internet Explorer Resource Management Errors Vulnerability

Added to the KEV catalog on August 12, 2025; federal remediation due September 2, 2025.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-3825 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 / internet explorer
microsoft / internet explorer
microsoft / internet explorer
microsoft / internet explorer

References

http://blogs.technet.com/b/srd/archive/2013/09/17/cve-2013-3893-fix-it-workaround-available.aspx(Exploit)
http://blogs.technet.com/b/srd/archive/2013/10/08/ms13-080-addresses-two-vulnerabilities-under-limited-targeted-attacks.aspx(Vendor Advisory)
http://jvn.jp/en/jp/JVN27443259/index.html(Third Party Advisory)
http://jvndb.jvn.jp/ja/contents/2013/JVNDB-2013-000093.html(Third Party Advisory)
http://packetstormsecurity.com/files/162585/Microsoft-Internet-Explorer-8-SetMouseCapture-Use-After-Free.html(Exploit)
http://pastebin.com/raw.php?i=Hx1L5gu6(Exploit)
http://technet.microsoft.com/security/advisory/2887505(Vendor Advisory)
http://www.securityfocus.com/bid/62453(Broken Link)
http://www.us-cert.gov/ncas/alerts/TA13-288A(US Government Resource)
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-080(Vendor Advisory)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18665(Broken Link)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-3893(US Government Resource)

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

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