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Fencer Intel
medium 4.9

CVE-2010-1735 json

The SfnLOGONNOTIFY function in win32k.sys in the kernel in Microsoft Windows 2000, XP, and Server 2003 allows local users to cause a denial…

published 2010-05-05 16 y ago modified 2026-06-16 4 mo ago also EUVD-2010-1755

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 84%
public exploits
1
Exploit-DB

Summary

The SfnLOGONNOTIFY function in win32k.sys in the kernel in Microsoft Windows 2000, XP, and Server 2003 allows local users to cause a denial of service (system crash) via a 0x4c value in the second argument (aka the Msg argument) of a PostMessage function call for the DDEMLEvent window.

Timeline

  1. First public exploit (EDB-12336)
  2. Published

Exploit prediction

2.49% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-12336 Microsoft Windows XP/2000/2003 - 'win32k.sys' SfnLOGONNOTIFY Local kernel Denial of Service dos, 2010-04-22
  • securityfocus.com http://www.securityfocus.com/bid/39630 referenced PoC, tagged "exploit" by a source, unverified
  • vigilance.fr http://vigilance.fr/vulnerability/Windows-denials-of-service-of-win32k-sys-9607 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation

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.