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Fencer Vulns
critical 9.3

CVE-2007-3896 in the critical feed json

The URL handling in Shell32.dll in the Windows shell in Microsoft Windows XP and Server 2003, with Internet Explorer 7 installed, allows re…

published 2007-10-11 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-3880

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
53.8%
EPSS 53.8% chance of exploitation in 30 days, percentile 99%
public exploits
1
Exploit-DB

Summary

The URL handling in Shell32.dll in the Windows shell in Microsoft Windows XP and Server 2003, with Internet Explorer 7 installed, allows remote attackers to execute arbitrary programs via invalid "%" sequences in a mailto: or other URI handler, as demonstrated using mIRC, Outlook, Firefox, Adobe Reader, Skype, and other applications. NOTE: this issue might be related to other issues involving URL handlers in Windows systems, such as CVE-2007-3845. There also might be separate but closely related issues in the applications that are invoked by the handlers.

Timeline

  1. First public exploit (EDB-30645)
  2. Published

Exploit prediction

53.83% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-30645 Microsoft Windows - URI Handler Command Execution remote, 2007-10-05

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns 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.