CVE-2011-0661 in the critical feed json
The SMB Server service in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, S…
published 2011-04-13 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-0679
- cvss
- 10.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 44.6%
- EPSS 44.6% chance of exploitation in 30 days, percentile 98%
- public exploits
- 0
- none known
Summary
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."
Exploit prediction
44.58% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).
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-20 Improper Input Validation
References
-
docs.microsoft.com
/en-us/security-updates/securitybulletins/2011/ms11-020
vendor-advisory
-
secunia.com
/advisories/44072
third-party-advisory
-
osvdb.org
/71781
vdb-entry
-
us-cert.gov
/cas/techalerts/TA11-102A.html
third-party-advisory, us-government-resource
-
securitytracker.com
/id?1025329
vdb-entry
-
vupen.com
/english/advisories/2011/0939
vdb-entry
-
securityfocus.com
/bid/47198
vdb-entry
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12076
vdb-entry, signature
Sources
- CVE List CVE-2011-0661
- NVD CVE-2011-0661
Fencer Intel 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.