CVE-2011-0026

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 34.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-01-12 · updated 2026-06-16
Weakness: CWE-189

Description

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."

Affected products

Microsoft Data Access Components: 2.8-sp1, 2.8-sp2
Microsoft Windows Data Access Components: 6.0

References

http://osvdb.org/70443
http://secunia.com/advisories/42804
http://support.avaya.com/css/P8/documents/100124846
http://www.securityfocus.com/bid/45695
http://www.securitytracker.com/id?1024947
http://www.us-cert.gov/cas/techalerts/TA11-011A.html
http://www.vupen.com/english/advisories/2011/0075
http://www.zerodayinitiative.com/advisories/ZDI-11-001/
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-002
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12333
http://osvdb.org/70443
http://secunia.com/advisories/42804

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