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CVE-2007-2903

36
FAUCET Score

CVE-2007-2903 describes a buffer overflow vulnerability in the Microsoft Office 2000 Controllo UA ActiveX control (OUACTRL.OCX) version 1.0.1.9. This flaw allows remote attackers to trigger a denial of service, likely a winhlp32.exe crash, by providing an excessively long first argument to the HelpPopup method. The vulnerability has a CVSS score of 5.0, indicating a medium severity. It is easily exploitable over the network with low attack complexity and requires no authentication, leading to a potential denial of service. While there is no evidence of active exploitation or inclusion in the CISA KEV catalog, a public exploit (EDB-3973) exists. Despite this, the CVE has received minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2000CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2000:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
28.51%
Probability of exploitation in next 30 days
EPSS Percentile
97.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-3973 · May 23, 2007
This CVE's current EPSS score of 0.2851 is in the 98th percentile among its peer group of 23,723 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

moaxb.blogspot.com / 2007/05/moaxb-23-microsoft-office-2000.html
Exploit
osvdb.org / 36034
exchange.xforce.ibmcloud.com / vulnerabilities/34473
shinnai.altervista.org / viewtopic.php
securityfocus.com / bid/24118
securitytracker.com / id
shinnai.altervista.org / moaxb/20070523/ouactrltxt.html
Exploit