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Case File

CVE-2009-3103

HIGH · CVSS 10 EPSS 90.23% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2009-09-08 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 10.0. It affects Microsoft, Windows. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 90.2% probability of exploitation in the next 30 days. It may be remotely exploitable. It may lead to a denial-of-service condition.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

External Security References

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2009-3103
Severity
HIGH
CVSS
10
EPSS
90.23%
Microsoft Windows

Original NVD 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.