What’s Vulnerable › Vulnerabilities

CVE-2002-1256

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2002-12-23 · updated 2026-06-16

Description

The SMB signing capability in the Server Message Block (SMB) protocol in Microsoft Windows 2000 and Windows XP allows attackers to disable the digital signing settings in an SMB session to force the data to be sent unsigned, then inject data into the session without detection, e.g. by modifying group policy information sent from a domain controller.

Affected products

• Microsoft Windows 2000: all versions
• Microsoft Windows 2000 Terminal Services: all versions
• Microsoft Windows XP Service Pack 3: all versions

References

• http://www.securityfocus.com/bid/6367
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-070
• https://exchange.xforce.ibmcloud.com/vulnerabilities/10843
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A277
• http://www.securityfocus.com/bid/6367
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-070
• https://exchange.xforce.ibmcloud.com/vulnerabilities/10843
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A277

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