CVE-2010-0477 EXPLOIT
10.0
HIGH · CVSS 2.0 · EPSS 50.2% (pctl 99)
Patch early
A public exploit exists.
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."
Scoring
| CVSS | 10.0 (HIGH, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:C/I:C/A:C |
| EPSS | 50.19% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-399 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2010-04-14 |
| Last modified | 2026-06-16 |
Affected (2)
| Vendor | Product |
|---|---|
| microsoft | windows 7 |
| microsoft | windows server 2008 |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft Windows 7/2008 R2 - SMB Client Trans2 Stack Overflow (MS10-020) (PoC) | 2010-04-17 |
References
- http://secunia.com/advisories/39372
- http://www.us-cert.gov/cas/techalerts/TA10-103A.html
- 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.html
- 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
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