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.
Conclusion & alert: CVE-2009-3103 is rated High Exploit Risk (90.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 92.94%, 100th percentile). Core evidence: 9 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 40280 | exploit_db | edb | 2016-02-26 | Exploit-DB ↗ |
| 14674 | exploit_db | edb | 2010-08-17 | Exploit-DB ↗ |
| 16363 | exploit_db | edb | 2010-07-03 | Exploit-DB ↗ |
| 12524 | exploit_db | edb | 2010-05-07 | Exploit-DB ↗ |
| 10005 | exploit_db | edb | 2009-11-11 | Exploit-DB ↗ |
| 9594 | exploit_db | edb | 2009-09-09 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-08-02 | 92.03% | 92.94% | +0.91% |
| 2 | 2025-07-28 | 92.23% | 92.03% | -0.20% |
| 3 | 2025-06-24 | — | 92.23% | — |
Full EPSS history (30 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | windows_server_2008 | — | cpe:2.3:o:microsoft:windows_server_2008:*:*:*:*:*:*:*:* |
| microsoft | windows_server_2008 | — | cpe:2.3:o:microsoft:windows_server_2008:*:*:itanium:*:*:*:*:* |
| microsoft | windows_server_2008 | — | cpe:2.3:o:microsoft:windows_server_2008:*:*:x32:*:*:*:*:* |
| microsoft | windows_server_2008 | — | cpe:2.3:o:microsoft:windows_server_2008:*:*:x64:*:*:*:*:* |
| microsoft | windows_server_2008 | — | cpe:2.3:o:microsoft:windows_server_2008:*:sp2:itanium:*:*:*:*:* |
| microsoft | windows_server_2008 | sp2 | cpe:2.3:o:microsoft:windows_server_2008:sp2:x32:*:*:*:*:*:* |
| microsoft | windows_server_2008 | sp2 | cpe:2.3:o:microsoft:windows_server_2008:sp2:x64:*:*:*:*:*:* |
| microsoft | windows_vista | — | cpe:2.3:o:microsoft:windows_vista:*:*:*:*:*:*:*:* |
| microsoft | windows_vista | — | cpe:2.3:o:microsoft:windows_vista:*:sp1:*:*:*:*:*:* |
| microsoft | windows_vista | — | cpe:2.3:o:microsoft:windows_vista:*:sp2:*:*:*:*:*:* |