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Fencer Vulns
medium 5.0

CVE-2007-2903 json

Buffer overflow in the HelpPopup method in the Microsoft Office 2000 Controllo UA di Microsoft Office ActiveX control (OUACTRL.OCX) 1.0.1.9…

published 2007-05-30 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-2895

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
28.5%
EPSS 28.5% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

Buffer overflow in the HelpPopup method in the Microsoft Office 2000 Controllo UA di Microsoft Office ActiveX control (OUACTRL.OCX) 1.0.1.9 allows remote attackers to cause a denial of service (probably winhlp32.exe crash) via a long first argument. NOTE: it is not clear whether this issue crosses privilege boundaries.

Timeline

  1. First public exploit (EDB-3973)
  2. Published

Exploit prediction

28.51% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-3973 Microsoft Office 2000 (OUACTRL.OCX 1.0.1.9) - Remote Denial of Service dos, 2007-05-23
  • moaxb.blogspot.com http://moaxb.blogspot.com/2007/05/moaxb-23-microsoft-office-2000.html referenced PoC, tagged "exploit" by a source, unverified
  • shinnai.altervista.org http://www.shinnai.altervista.org/moaxb/20070523/ouactrltxt.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

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.