CVE-2010-0477
highpriority · attend · 68EPSS 0.502 · 99 %ileexploit · functionalEUUSEPSS · scored 2026-10-27
The SMB client in Microsoft Windows Server 2008 R2 and Windows 7 does not properly handle (1) SMBv1 and (2) SMBv2 response packets, which allows remote SMB servers and man-in-the-middle attackers to execute arbitrary code via a crafted packet that causes the client to read the entirety of the response, and then improperly interact with the Winsock Kernel (WSK), aka "SMB Client Message Size Vulnerability."
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- EDB-12273Microsoft Windows 7/2008 R2 - SMB Client Trans2 Stack Overflow (MS10-020) (PoC)functional · exploit_db
affected products (3)
Products and version ranges known to be affected.
- microsoft windows server 2008all versionsnvdUScpe:2.3:o:microsoft:windows_server_2008:*:*:*:*:*:*:*:*
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- http://secunia.com/advisories/39372enisa_euvd
- http://www.us-cert.gov/cas/techalerts/TA10-103A.htmlenisa_euvd
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-020enisa_euvd
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6859enisa_euvd
- http://secunia.com/advisories/39372nvd
- http://www.us-cert.gov/cas/techalerts/TA10-103A.htmlUS Government Resourcenvd
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-020nvd
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6859nvd
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