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Vulnerability record · CVE-2007-2903 · published 30 May 2007

CVE-2007-2903: Microsoft office vulnerability

Microsoft · Office

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.

5.0 CVSS 2.0 Medium EPSS 29% · top 1.9%
5.0CVSS 2.0 base score
29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 4 tagged exploit
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://moaxb.blogspot.com/2007/05/moaxb-23-microsoft-office-2000.html Exploit
http://osvdb.org/36034
http://shinnai.altervista.org/viewtopic.php?id=42&t_id=26
http://www.securityfocus.com/bid/24118
http://www.securitytracker.com/id?1018107
http://www.shinnai.altervista.org/moaxb/20070523/ouactrltxt.html Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/34473
http://moaxb.blogspot.com/2007/05/moaxb-23-microsoft-office-2000.html Exploit
http://osvdb.org/36034
http://shinnai.altervista.org/viewtopic.php?id=42&t_id=26
http://www.securityfocus.com/bid/24118
http://www.securitytracker.com/id?1018107
http://www.shinnai.altervista.org/moaxb/20070523/ouactrltxt.html Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/34473

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2007-2903), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.