CVE-2013-3893: Microsoft Internet Explorer Resource Management Errors Vulnerability

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: yes — in CISA KEV since 2025-08-12
EPSS: 87.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2013-09-18 · updated 2026-06-16
Weakness: CWE-416

Description

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.

Affected products

Microsoft Internet Explorer 11: 6, 7, 8, 9, 10, 11-developer-preview (+1)

References

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

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