{"cve":"CVE-2002-1256","nvd":{"published":"2002-12-23T05:00:00.000","modified":"2026-06-16T21:59:00.847","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"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"],"products":["microsoft:windows_2000","microsoft:windows_2000_terminal_services","microsoft:windows_xp"],"source":"nvd","synced_at":"2026-10-19T19:34:38.930894741+00:00"},"epss":{"cve":"CVE-2002-1256","score":0.05413,"percentile":0.92695,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}