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TI-2011-00025 Aliases CVE-2011-0026GHSA-g3pv-wmg4-q78r

Integer signedness error in the SQLConnectW function in an ODBC API (odbc32.dll) in…

Priority HIGH 65CWE-189Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
Code execution
Confidentiality · integrity · availability
Complete · Complete · Complete
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-189 and the CVSS impact.

Summary

Integer signedness error in the SQLConnectW function in an ODBC API (odbc32.dll) in Microsoft Data Access Components (MDAC) 2.8 SP1 and SP2, and Windows Data Access Components (WDAC) 6.0, allows remote attackers to execute arbitrary code via a long string in the Data Source Name (DSN) and a crafted szDSN argument, which bypasses a signed comparison and leads to a buffer overflow, aka "DSN Overflow Vulnerability."

Why it matters now

EPSS 0.34399 98th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 18

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:data_access_components:2.8:sp1:*:*:*:*:*:*2.8 sp1VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_xp:*:*:*:*:*:*:*:*all versionsRunning onMicrosoft
cpe:2.3:a:microsoft:data_access_components:2.8:sp2:*:*:*:*:*:*2.8 sp2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_xp:-:sp2:x64:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:a:microsoft:windows_data_access_components:6.0:*:*:*:*:*:*:*6.0VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_7:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:*:*:itanium:*:*:*:*:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:*:*:x32:*:*:*:*:*all versionsRunning onMicrosoft
  • cpe:2.3:a:microsoft:data_access_components:2.8:sp1:*:*:*:*:*:* Versions 2.8 sp1 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_xp:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
  • cpe:2.3:a:microsoft:data_access_components:2.8:sp2:*:*:*:*:*:* Versions 2.8 sp2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_xp:-:sp2:x64:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
  • cpe:2.3:a:microsoft:windows_data_access_components:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_7:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:*:*:itanium:*:*:*:*:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:*:*:x32:*:*:*:*:* Versions all versions Running on ·Microsoft
Show 8 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_server_2008:*:*:x64:*:*:*:*:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:*:sp2:x32:*:*:*:*:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:*:sp2:x64:*:*:*:*:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:itanium:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:r2:*:itanium:*:*:*:*:*r2Running onMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:r2:*:x64:*:*:*:*:*r2Running onMicrosoft
cpe:2.3:o:microsoft:windows_vista:*:sp1:*:*:*:*:*:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_vista:*:sp2:*:*:*:*:*:*all versionsRunning onMicrosoft
  • cpe:2.3:o:microsoft:windows_server_2008:*:*:x64:*:*:*:*:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:*:sp2:x32:*:*:*:*:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:*:sp2:x64:*:*:*:*:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:itanium:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:r2:*:itanium:*:*:*:*:* Versions r2 Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:r2:*:x64:*:*:*:*:* Versions r2 Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_vista:*:sp1:*:*:*:*:*:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_vista:*:sp2:*:*:*:*:*:* Versions all versions Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-0026
  2. 2026-10-03 Alias added: GHSA-g3pv-wmg4-q78r

References

Advisory 2

Other 5

  • TI-1999-00961 The Remote Data Service (RDS) DataFactory component of Microsoft Data Access Components… CVSS 2.0HIGH 10.0
  • TI-2011-00026 Microsoft Data Access Components (MDAC) 2.8 SP1 and SP2, and Windows Data Access… CVSS 2.0HIGH 9.3
  • TI-2012-01671 Heap-based buffer overflow in Microsoft Data Access Components (MDAC) 2.8 SP1 and SP2 and… CVSS 3.1CRITICAL 9.8
  • TI-2002-01111 Heap-based buffer overflow in the Remote Data Services (RDS) component of Microsoft Data… CVSS 2.0HIGH 7.5
  • TI-2006-05370 The Execute method in the ADODB.Connection 2.7 and 2.8 ActiveX control objects… CVSS 2.0HIGH 9.3
  • TI-2003-00825 Buffer overflow in a component of Microsoft Data Access Components (MDAC) 2.5 through 2.8… CVSS 2.0HIGH 10.0
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences