{"cve":"CVE-2011-0026","nvd":{"published":"2011-01-12T01:00:01.807","modified":"2026-06-16T23:26:38.787","status":"Modified","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.\"","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-189"],"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"],"products":["microsoft:data_access_components","microsoft:windows_data_access_components"],"source":"nvd","synced_at":"2026-10-19T19:57:56.749847046+00:00"},"epss":{"cve":"CVE-2011-0026","score":0.34399,"percentile":0.98412,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}