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Fencer Intel
high 8.8

CVE-2013-3893 kev in the critical feed json

Use-after-free vulnerability in the SetMouseCapture implementation in mshtml.dll in Microsoft Internet Explorer 6 through 11 allows remote…

published 13y ago modified 4mo ago also EUVD-2013-3825

cvss
8.8
version 3.1, CNA
cisa kev
Exploited
added 2025-08-12
epss
87.6%
EPSS 87.6% chance of exploitation in 30 days, percentile 99.7%
public exploits
3
Metasploit and Exploit-DB

Summary

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.

Patch / fix

cisa required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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Timeline

  1. First public exploit (Metasploit exploit/windows/browser/ie_setmousecapture_uaf)
  2. Published
  3. Added to CISA KEV
  4. CISA SSVC: exploitation active
  5. CISA patch deadline

Known exploited

Added
last yr.
Patch by
2025-09-02 (last yr.)
Ransomware
Not known
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor, product
Microsoft, Internet Explorer
CISA name
Microsoft Internet Explorer Resource Management Errors Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

87.64% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Metasploit exploit/windows/browser/ie_setmousecapture_uaf MS13-080 Microsoft Internet Explorer SetMouseCapture Use-After-Free metasploit exploit, normal rank, 2013-09-17
  • EDB-49872 Microsoft Internet Explorer 8 - 'SetMouseCapture ' Use After Free local, 2021-05-17
  • EDB-28682 Micorosft Internet Explorer - SetMouseCapture Use-After-Free (Metasploit) remote, 2013-10-02
  • pastebin.com http://pastebin.com/raw.php?i=Hx1L5gu6 referenced PoC, tagged "exploit" by a source, unverified
  • blogs.technet.com http://blogs.technet.com/b/srd/archive/2013/09/17/cve-2013-3893-fix-it-workaround-available.aspx referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/162585/Microsoft-Internet-Explorer-8-SetMouseCapture-Use-After-Free.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.