CVE-2013-3893

Microsoft Internet Explorer Resource Management Errors

8.8 HIGHActively exploited (CISA KEV)Public exploitEPSS 87.5%

Published18 Sept 2013
Added to CISA KEV12 Aug 2025
Remediation due2 Sept 2025

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Microsoft Internet Explorer10 · 11 · 6 · 7

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

References

http://blogs.technet.com/b/srd/archive/2013/09/17/cve-2013-3893-fix-it-workaround-available.aspxExploit
http://blogs.technet.com/b/srd/archive/2013/10/08/ms13-080-addresses-two-vulnerabilities-under-limited-targeted-attacks.aspxVendor Advisory
http://jvndb.jvn.jp/ja/contents/2013/JVNDB-2013-000093.htmlThird Party Advisory
http://jvn.jp/en/jp/JVN27443259/index.htmlThird Party Advisory
http://packetstormsecurity.com/files/162585/Microsoft-Internet-Explorer-8-SetMouseCapture-Use-After-Free.htmlExploit
http://pastebin.com/raw.php?i=Hx1L5gu6Exploit
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-080Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18665Broken Link
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-3893US Government Resource
http://technet.microsoft.com/security/advisory/2887505Vendor Advisory

and 2 more references

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2013-3893 being actively exploited?

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

How severe is CVE-2013-3893?

CVE-2013-3893 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 87.5% probability of exploitation.

Which products are affected by CVE-2013-3893?

Affected products include Microsoft Internet Explorer.

How do I fix CVE-2013-3893?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2013-3893 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.