Microsoft Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold and SP2, and Windows 7 RC do not properly process the command value in…

published 2009-10-14 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-2527

cvss: 10.0; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 62.2%; EPSS 62.2% chance of exploitation in 30 days, percentile 99.1%
public exploits: 2; Exploit-DB

Microsoft Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold and SP2, and Windows 7 RC do not properly process the command value in an SMB Multi-Protocol Negotiate Request packet, which allows remote attackers to execute arbitrary code via a crafted SMBv2 packet to the Server service, aka "SMBv2 Command Value Vulnerability."

Timeline

2009-10-14 Published
2010-08-17 First public exploit (EDB-14674)

Exploit prediction

62.17% chance of exploitation in the next 30 days, higher than 99.1% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-40280 Microsoft Windows - 'srv2.sys' SMB Code Execution (Python) (MS09-050) remote, 2016-02-26
EDB-14674 Microsoft Windows - 'srv2.sys' SMB Negotiate ProcessID Function Table Dereference (MS09-050) remote, 2010-08-17

CVSS scores

assigned by	version	score	vector
NVD	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-94 Improper Control of Generation of Code

References

docs.microsoft.com /en-us/security-updates/securitybulletins/2009/ms09-050
vendor-advisory
us-cert.gov /cas/techalerts/TA09-286A.html
third-party-advisory, us-government-resource
oval.cisecurity.org /repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6336
vdb-entry, signature

Sources

CVE List CVE-2009-2532
NVD CVE-2009-2532

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary