{"id":"CVE-2006-6696","aliases":["EUVD-2006-6679","GHSA-fmp2-4wcx-jwx4"],"status":"published","title":"Double free vulnerability in Microsoft Windows 2000, XP, 2003, and Vista allows local users to...","description":"Double free vulnerability in Microsoft Windows 2000, XP, 2003, and Vista allows local users to gain privileges by calling the MessageBox function with a MB_SERVICE_NOTIFICATION message with crafted data, which sends a HardError message to Client/Server Runtime Server Subsystem (CSRSS) process, which is not properly handled when invoking the UserHardError and GetHardErrorText functions in WINSRV.DLL.","severity":{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.03414,"percentile":0.88976,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-119"],"published":"2006-12-22T02:00:00Z","modified":"2026-06-16T22:33:37Z","exploits":[{"source":"exploitdb","id":"EDB-2967","title":"Microsoft Windows - 'MessageBox' Memory Corruption Local Denial of Service","type":"dos","platform":"windows","date":"2006-12-20","verified":true,"url":"https://www.exploit-db.com/exploits/2967"},{"source":"exploitdb","id":"EDB-3024","title":"Microsoft Windows - NtRaiseHardError 'Csrss.exe' Memory Disclosure","type":"local","platform":"windows","date":"2006-12-27","verified":true,"url":"https://www.exploit-db.com/exploits/3024"}],"products":[{"vendor":"microsoft","product":"windows_2000"},{"vendor":"microsoft","product":"windows_2003_server"},{"vendor":"microsoft","product":"windows_vista"},{"vendor":"microsoft","product":"windows_xp"}],"references":[{"url":"http://www.kuban.ru/forum_new/forum2/files/19124.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/455546/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/466331/100/200/threaded","tags":["vendor-advisory","x_refsource_HP","x_transferred"]},{"url":"http://securitytracker.com/id?1017433","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://groups.google.ca/group/microsoft.public.win32.programmer.kernel/browse_thread/thread/c5946bf40f227058/7bd7b5d66a4e5aff","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.security.nnov.ru/Gnews944.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://research.eeye.com/html/alerts/zeroday/20061215.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.determina.com/security.research/vulnerabilities/csrss-harderror.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/455088/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://blogs.technet.com/msrc/archive/2006/12/22/new-report-of-a-windows-vulnerability.aspx","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/455158/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://www.securityfocus.com/bid/21688","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-021","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1816","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2007/1325","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"http://www.security.nnov.ru/files/messagebox.c","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://lists.grok.org.uk/pipermail/full-disclosure/2006-December/051394.html","tags":["mailing-list","x_refsource_FULLDISC","x_transferred"]},{"url":"http://www.securityfocus.com/bid/23324","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/455104/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/455061/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://secunia.com/advisories/23448","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://isc.sans.org/diary.php?n\u0026storyid=1965","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2006/5120","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2006-6696"},{"url":"https://github.com/advisories/GHSA-fmp2-4wcx-jwx4"}],"sources":{"cve":[{"id":"CVE-2006-6696","description":"Double free vulnerability in Microsoft Windows 2000, XP, 2003, and Vista allows local users to gain privileges by calling the MessageBox function with a MB_SERVICE_NOTIFICATION message with crafted data, which sends a HardError message to Client/Server Runtime Server Subsystem (CSRSS) process, which is not properly handled when invoking the UserHardError and GetHardErrorText functions in WINSRV.DLL.","status":"published","published":"2006-12-22T02:00:00Z","modified":"2024-08-07T20:34:00.423Z","updated_at":"2026-11-02T14:33:50.374603Z"}],"euvd":[{"id":"EUVD-2006-6679","description":"Double free vulnerability in Microsoft Windows 2000, XP, 2003, and Vista allows local users to gain privileges by calling the MessageBox function with a MB_SERVICE_NOTIFICATION message with crafted data, which sends a HardError message to Client/Server Runtime Server Subsystem (CSRSS) process, which is not properly handled when invoking the UserHardError and GetHardErrorText functions in WINSRV.DLL.","status":"published","published":"2006-12-22T02:00:00Z","modified":"2024-08-07T20:34:00Z","updated_at":"2026-11-03T01:15:42.481414Z"}],"ghsa":[{"id":"GHSA-fmp2-4wcx-jwx4","title":"Double free vulnerability in Microsoft Windows 2000, XP, 2003, and Vista allows local users to...","description":"Double free vulnerability in Microsoft Windows 2000, XP, 2003, and Vista allows local users to gain privileges by calling the MessageBox function with a MB_SERVICE_NOTIFICATION message with crafted data, which sends a HardError message to Client/Server Runtime Server Subsystem (CSRSS) process, which is not properly handled when invoking the UserHardError and GetHardErrorText functions in WINSRV.DLL.","status":"published","published":"2022-05-01T07:40:38Z","modified":"2023-01-31T05:03:04Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:48:23.641719Z"}],"nvd":[{"id":"CVE-2006-6696","description":"Double free vulnerability in Microsoft Windows 2000, XP, 2003, and Vista allows local users to gain privileges by calling the MessageBox function with a MB_SERVICE_NOTIFICATION message with crafted data, which sends a HardError message to Client/Server Runtime Server Subsystem (CSRSS) process, which is not properly handled when invoking the UserHardError and GetHardErrorText functions in WINSRV.DLL.","status":"published","published":"2006-12-22T02:28:00Z","modified":"2026-06-16T22:33:37.03Z","cvss":[{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:01:09.852738Z"}]}}