{"cve":"CVE-2009-3103","nvd":{"published":"2009-09-08T22:30:00.517","modified":"2026-06-16T23:10:57.120","status":"Modified","description":"Array index error in the SMBv2 protocol implementation in srv2.sys in Microsoft Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold and SP2, and Windows 7 RC allows remote attackers to execute arbitrary code or cause a denial of service (system crash) via an & (ampersand) character in a Process ID High header field in a NEGOTIATE PROTOCOL REQUEST packet, which triggers an attempted dereference of an out-of-bounds memory location, aka \"SMBv2 Negotiation Vulnerability.\" NOTE: some of these details are obtained from third party information.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-399"],"references":["http://archives.neohapsis.com/archives/fulldisclosure/2009-09/0090.html","http://blog.48bits.com/?p=510","http://g-laurent.blogspot.com/2009/09/windows-vista7-smb20-negotiate-protocol.html","http://isc.sans.org/diary.html?storyid=7093","http://osvdb.org/57799"],"products":["microsoft:windows_server_2008","microsoft:windows_vista"],"source":"nvd","synced_at":"2026-10-19T19:54:26.868835795+00:00"},"epss":{"cve":"CVE-2009-3103","score":0.92347,"percentile":0.99823,"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."]}