{"id":"CVE-2011-1985","aliases":["EUVD-2011-1979","GHSA-cm3v-7fgr-4cc4"],"status":"published","title":"win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003...","description":"win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly validate user-mode input, which allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via a crafted application, aka \"Win32k Null Pointer De-reference Vulnerability.\"","severity":{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0227,"percentile":0.83173,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-476"],"published":"2011-10-12T01:00:00Z","modified":"2026-06-16T23:30:32Z","exploits":[{"source":"exploitdb","id":"EDB-18024","title":"Microsoft Win32k - Null Pointer De-reference (PoC) (MS11-077)","type":"dos","platform":"windows","date":"2011-10-23","verified":true,"url":"https://www.exploit-db.com/exploits/18024"}],"products":[{"vendor":"microsoft","product":"windows_2003_server"},{"vendor":"microsoft","product":"windows_7"},{"vendor":"microsoft","product":"windows_server_2003"},{"vendor":"microsoft","product":"windows_server_2008"},{"vendor":"microsoft","product":"windows_vista"},{"vendor":"microsoft","product":"windows_xp"}],"references":[{"url":"http://www.securitytracker.com/id?1026165","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-077","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12935","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1985"},{"url":"https://github.com/advisories/GHSA-cm3v-7fgr-4cc4"}],"sources":{"cve":[{"id":"CVE-2011-1985","description":"win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly validate user-mode input, which allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via a crafted application, aka \"Win32k Null Pointer De-reference Vulnerability.\"","status":"published","published":"2011-10-12T01:00:00Z","modified":"2025-01-21T18:07:49.453Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:35:38.711857Z"}],"euvd":[{"id":"EUVD-2011-1979","description":"win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly validate user-mode input, which allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via a crafted application, aka \"Win32k Null Pointer De-reference Vulnerability.\"","status":"published","published":"2011-10-12T01:00:00Z","modified":"2025-01-21T18:07:49Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:04:15.779798Z"}],"ghsa":[{"id":"GHSA-cm3v-7fgr-4cc4","title":"win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003...","description":"win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly validate user-mode input, which allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via a crafted application, aka \"Win32k Null Pointer De-reference Vulnerability.\"","status":"published","published":"2022-05-13T01:15:34Z","modified":"2025-01-21T18:31:02Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:59:36.884709Z"}],"nvd":[{"id":"CVE-2011-1985","description":"win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly validate user-mode input, which allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via a crafted application, aka \"Win32k Null Pointer De-reference Vulnerability.\"","status":"published","published":"2011-10-12T02:52:43.457Z","modified":"2026-06-16T23:30:32.993Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:02:10.769216Z"}]}}