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Fencer Vulns
critical 9.3

CVE-2006-5559 in the critical feed json

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 Micro…

published 2006-10-27 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-5544

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
43.6%
EPSS 43.6% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

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.

Patch / fix

Timeline

  1. First public exploit (EDB-2629)
  2. Published

Exploit prediction

43.62% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-2629 Microsoft Internet Explorer - ADODB Execute Denial of Service (PoC) dos, 2006-10-24
  • securitytracker.com http://securitytracker.com/id?1017127 referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/20704 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation

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.