CVE-2011-0661
The SMB Server service in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly validate fields in SMB requests, which allows remote attackers to execute arbitrary code via a malformed request in a (1) SMBv1 or (2) SMBv2 packet, aka "SMB Transaction Parsing Vulnerability."
Key facts
- CVSS score
- 10.0 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C- Weakness (CWE)
- CWE-20
- EPSS score
- 44.6% (99th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-0679)
- Published
- April 13, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-0679 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- microsoft / windows 2003 server
- microsoft / windows 7
- microsoft / windows 7
- microsoft / windows 7
- microsoft / windows server 2003
- microsoft / windows server 2008
- microsoft / windows server 2008
- microsoft / windows server 2008
- microsoft / windows server 2008
- microsoft / windows server 2008
- microsoft / windows server 2008
- microsoft / windows server 2008
- microsoft / windows server 2008
- microsoft / windows vista
- microsoft / windows vista
- microsoft / windows xp
- microsoft / windows xp
Certified products that may be affected
18 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Windows 7 BitLocker™ Drive Encryption - Microsoft Corporation - FIPS 140 1332 - historical
- Microsoft Windows 7 Kernel Mode Cryptographic Primitives Library (cng.sys) - Microsoft Corporation - FIPS 140 1328 - historical
- Microsoft Windows Vista Kernel Mode Security Support Provider Interface (ksecdd.sys) - Microsoft Corporation - FIPS 140 1000 - historical
- Microsoft Windows Vista Cryptographic Primitives Library (bcrypt.dll) - Microsoft Corporation - FIPS 140 1001 - historical
- Windows Vista Enhanced Cryptographic Provider (RSAENH) - Microsoft Corporation - FIPS 140 1002 - historical
See all 18 in the Security Certifications Explorer.
References
- http://osvdb.org/71781
- http://secunia.com/advisories/44072
- http://www.securityfocus.com/bid/47198
- http://www.securitytracker.com/id?1025329
- http://www.us-cert.gov/cas/techalerts/TA11-102A.html(US Government Resource)
- http://www.vupen.com/english/advisories/2011/0939
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-020
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12076
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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