CVE-2006-5559
The Execute method in the ADODB.Connection 2.7 and 2.8 ActiveX control objects (ADODB.Connection...
The Execute method in the ADODB.Connection 2.7 and 2.8 ActiveX control objects (ADODB.Connection.2.7 and ADODB.Connection.2.8) in the Microsoft Data Access Components (MDAC) 2.5 SP3, 2.7 SP1, 2.8, and 2.8 SP1 does not properly track freed memory when the second argument is a BSTR, which allows remote attackers to cause a denial of service (Internet Explorer crash) and possibly execute arbitrary code via certain strings in the second and third arguments.
Exploit likelihood
What each source reports
NVD Score used
The Execute method in the ADODB.Connection 2.7 and 2.8 ActiveX control objects (ADODB.Connection.2.7 and ADODB.Connection.2.8) in the Microsoft Data Access Components (MDAC) 2.5 SP3, 2.7 SP1, 2.8, and 2.8 SP1 does not properly track freed memory when the second argument is a BSTR, which allows remote attackers to cause a denial of service (Internet Explorer crash) and possibly execute arbitrary code via certain strings in the second and third arguments.
- Record
CVE-2006-5559- CVSS 2.0
- 9.3 High
AV:N/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
The Execute method in the ADODB.Connection 2.7 and 2.8 ActiveX control objects (ADODB.Connection.2.7 and ADODB.Connection.2.8) in the Microsoft Data Access Components (MDAC) 2.5 SP3, 2.7 SP1, 2.8, and 2.8 SP1 does not properly track freed memory when the second argument is a BSTR, which allows remote attackers to cause a denial of service (Internet Explorer crash) and possibly execute arbitrary code via certain strings in the second and third arguments.
- Record
CVE-2006-5559- Updated
- 2026-11-02
EUVDEUVD-2006-5544 No score
The Execute method in the ADODB.Connection 2.7 and 2.8 ActiveX control objects (ADODB.Connection.2.7 and ADODB.Connection.2.8) in the Microsoft Data Access Components (MDAC) 2.5 SP3, 2.7 SP1, 2.8, and 2.8 SP1 does not properly track freed memory when the second argument is a BSTR, which allows remote attackers to cause a denial of service (Internet Explorer crash) and possibly execute arbitrary code via certain strings in the second and third arguments.
- Record
EUVD-2006-5544- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-662x-vqg2-x4mr No score
The Execute method in the ADODB.Connection 2.7 and 2.8 ActiveX control objects (ADODB.Connection...
The Execute method in the ADODB.Connection 2.7 and 2.8 ActiveX control objects (ADODB.Connection.2.7 and ADODB.Connection.2.8) in the Microsoft Data Access Components (MDAC) 2.5 SP3, 2.7 SP1, 2.8, and 2.8 SP1 does not properly track freed memory when the second argument is a BSTR, which allows remote attackers to cause a denial of service (Internet Explorer crash) and possibly execute arbitrary code via certain strings in the second and third arguments.
- Record
GHSA-662x-vqg2-x4mr- Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Microsoft Internet Explorer - ADODB Execute Denial of Service (PoC) | 2006-10-24 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2006-5559 is a high vulnerability (CVSS 9.3) in Microsoft Data Access Components, published October 27, 2006. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 43.6%, the 98th percentile. No source names a fixed version.
References
securitytracker.com/id?1017127
docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-009
securityfocus.com/bid/20704
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A214
secunia.com/advisories/22452
us-cert.gov/cas/techalerts/TA07-044A.html
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research.eeye.com/html/alerts/zeroday/20061027.html
kb.cert.org/vuls/id/589272
exchange.xforce.ibmcloud.com/vulnerabilities/29837
osvdb.org/31882
blogs.technet.com/msrc/archive/2006/10/27/adodb-connection-poc-published.aspx
vupen.com/english/advisories/2007/0578
nvd.nist.gov/vuln/detail/CVE-2006-5559
github.com/advisories/GHSA-662x-vqg2-x4mr