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Fencer Vulns
high 7.2

CVE-2003-0659 in the critical feed json

Buffer overflow in a function in User32.dll on Windows NT through Server 2003 allows local users to execute arbitrary code via long (1) LB_…

published 2003-10-17 23 y ago modified 2026-06-16 4 mo ago also EUVD-2003-0653

cvss
7.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
43.0%
EPSS 43.0% chance of exploitation in 30 days, percentile 98%
public exploits
2
Exploit-DB

Summary

Buffer overflow in a function in User32.dll on Windows NT through Server 2003 allows local users to execute arbitrary code via long (1) LB_DIR messages to ListBox or (2) CB_DIR messages to ComboBox controls in a privileged application.

Patch / fix

Timeline

  1. First public exploit (EDB-23255)
  2. Published

Exploit prediction

43.04% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-23255 Microsoft ListBox/ComboBox Control - 'User32.dll' Buffer Overrun local, 2003-10-15
  • EDB-122 Microsoft Windows - ListBox/ComboBox Control Local (MS03-045) local, 2003-11-14

CVSS scores

assigned by version score vector
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

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.