CVE-2009-3676
The SMB client in the kernel in Microsoft Windows Server 2008 R2 and Windows 7 allows remote SMB...
The SMB client in the kernel in Microsoft Windows Server 2008 R2 and Windows 7 allows remote SMB servers and man-in-the-middle attackers to cause a denial of service (infinite loop and system hang) via a (1) SMBv1 or (2) SMBv2 response packet that contains (a) an incorrect length value in a NetBIOS header or (b) an additional length field at the end of this response packet, aka "SMB Client Incomplete Response Vulnerability."
Exploit likelihood
What each source reports
NVD Score used
The SMB client in the kernel in Microsoft Windows Server 2008 R2 and Windows 7 allows remote SMB servers and man-in-the-middle attackers to cause a denial of service (infinite loop and system hang) via a (1) SMBv1 or (2) SMBv2 response packet that contains (a) an incorrect length value in a NetBIOS header or (b) an additional length field at the end of this response packet, aka "SMB Client Incomplete Response Vulnerability."
- Record
CVE-2009-3676- CVSS 2.0
- 7.1 High
AV:N/AC:M/Au:N/C:N/I:N/A:C - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
The SMB client in the kernel in Microsoft Windows Server 2008 R2 and Windows 7 allows remote SMB servers and man-in-the-middle attackers to cause a denial of service (infinite loop and system hang) via a (1) SMBv1 or (2) SMBv2 response packet that contains (a) an incorrect length value in a NetBIOS header or (b) an additional length field at the end of this response packet, aka "SMB Client Incomplete Response Vulnerability."
- Record
CVE-2009-3676- Updated
- 2026-11-02
EUVDEUVD-2009-3651 No score
The SMB client in the kernel in Microsoft Windows Server 2008 R2 and Windows 7 allows remote SMB servers and man-in-the-middle attackers to cause a denial of service (infinite loop and system hang) via a (1) SMBv1 or (2) SMBv2 response packet that contains (a) an incorrect length value in a NetBIOS header or (b) an additional length field at the end of this response packet, aka "SMB Client Incomplete Response Vulnerability."
- Record
EUVD-2009-3651- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8q5p-rpfq-gjc9 No score
The SMB client in the kernel in Microsoft Windows Server 2008 R2 and Windows 7 allows remote SMB...
The SMB client in the kernel in Microsoft Windows Server 2008 R2 and Windows 7 allows remote SMB servers and man-in-the-middle attackers to cause a denial of service (infinite loop and system hang) via a (1) SMBv1 or (2) SMBv2 response packet that contains (a) an incorrect length value in a NetBIOS header or (b) an additional length field at the end of this response packet, aka "SMB Client Incomplete Response Vulnerability."
- Record
GHSA-8q5p-rpfq-gjc9- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-3676 is a high vulnerability (CVSS 7.1) in Microsoft Windows 7, published November 13, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 34.6%, the 98th percentile. No source names a fixed version.
References
news.cnet.com/8301-27080_3-10395891-245.html
securitytracker.com/id?1023179
g-laurent.blogspot.com/2009/11/windows-7-server-2008r2-remote-kernel.html
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7186
microsoft.com/technet/security/advisory/977544.mspx
secunia.com/advisories/37347
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vupen.com/english/advisories/2009/3216
docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-020
praetorianprefect.com/archives/2009/11/how-to-crash-windows-7-and-server-2008
seclists.org/fulldisclosure/2009/Nov/134
blogs.technet.com/msrc/archive/2009/11/13/microsoft-security-advisory-977544-released.aspx
us-cert.gov/cas/techalerts/TA10-103A.html
nvd.nist.gov/vuln/detail/CVE-2009-3676
github.com/advisories/GHSA-8q5p-rpfq-gjc9