CVE-2013-3893
Microsoft Internet Explorer Resource Management Errors Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 2 September 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 87.64% probability · 100th percentile
- Public exploits
- 2 in Exploit-DB · verified · first 2 October 2013
- CISA KEV
- Listed 12 August 2025 · due 2 September 2025
- Weakness
- CWE-416
- Affected
- microsoft/internet explorer
- Source
- secure@microsoft.com
EPSS moved from 87.5% on 24 September 2026 to 87.6% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://learn.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-080 ; https://nvd.nist.gov/vuln/detail/CVE-2013-3893
Public exploits (2)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
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://jvn.jp/en/jp/JVN27443259/index.htmlThird Party Advisory
- http://jvndb.jvn.jp/ja/contents/2013/JVNDB-2013-000093.htmlThird Party Advisory
- http://packetstormsecurity.com/files/162585/Microsoft-Internet-Explorer-8-SetMouseCapture-Use-After-Free.htmlExploit
- http://pastebin.com/raw.php?i=Hx1L5gu6Exploit
- http://technet.microsoft.com/security/advisory/2887505Vendor Advisory
- http://www.securityfocus.com/bid/62453Broken Link
- http://www.us-cert.gov/ncas/alerts/TA13-288AUS Government Resource
- 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
- 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://jvn.jp/en/jp/JVN27443259/index.htmlThird Party Advisory
- http://jvndb.jvn.jp/ja/contents/2013/JVNDB-2013-000093.htmlThird Party Advisory
- http://packetstormsecurity.com/files/162585/Microsoft-Internet-Explorer-8-SetMouseCapture-Use-After-Free.htmlExploit
- http://pastebin.com/raw.php?i=Hx1L5gu6Exploit
- http://technet.microsoft.com/security/advisory/2887505Vendor Advisory
- http://www.securityfocus.com/bid/62453Broken Link
- http://www.us-cert.gov/ncas/alerts/TA13-288AUS Government Resource
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.