CVE-2010-0477
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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 50.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
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 2.0
- 10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C
- EPSS
- 50.19% probability · 99th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 17 April 2010
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- microsoft/windows 7 · microsoft/windows server 2008
- Source
- secure@microsoft.com
EPSS 50.2% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://secunia.com/advisories/39372
- http://www.us-cert.gov/cas/techalerts/TA10-103A.htmlUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-020
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6859
- http://secunia.com/advisories/39372
- http://www.us-cert.gov/cas/techalerts/TA10-103A.htmlUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-020
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6859
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.