{"id":"CVE-2018-0833","aliases":["EUVD-2018-1638","GHSA-m84f-8362-3v3c"],"status":"published","title":"The Microsoft Server Message Block 2.0 and 3.0 (SMBv2/SMBv3) client in Windows 8.1 and RT 8.1 and...","description":"The Microsoft Server Message Block 2.0 and 3.0 (SMBv2/SMBv3) client in Windows 8.1 and RT 8.1 and Windows Server 2012 R2 allows a denial of service vulnerability due to how specially crafted requests are handled, aka \"SMBv2/SMBv3 Null Dereference Denial of Service Vulnerability\".","severity":{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.40159,"percentile":0.98647,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-476"],"published":"2018-02-15T02:00:00Z","modified":"2026-06-17T01:31:45Z","exploits":[{"source":"exploitdb","id":"EDB-44189","title":"Microsoft Windows 8.1/2012 R2 - SMBv3 Null Pointer Dereference Denial of Service","type":"dos","platform":"windows","date":"2018-02-27","verified":true,"url":"https://www.exploit-db.com/exploits/44189"}],"products":[{"vendor":"microsoft","product":"windows_8.1"},{"vendor":"microsoft","product":"windows_rt_8.1"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft corporation","product":"server message block"}],"references":[{"url":"http://www.securityfocus.com/bid/102924","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0833","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id/1040375","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://github.com/KINGSABRI/CVE-in-Ruby/tree/master/CVE-2018-0833","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.exploit-db.com/exploits/44189/","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-0833"},{"url":"https://github.com/advisories/GHSA-m84f-8362-3v3c"}],"sources":{"cve":[{"id":"CVE-2018-0833","description":"The Microsoft Server Message Block 2.0 and 3.0 (SMBv2/SMBv3) client in Windows 8.1 and RT 8.1 and Windows Server 2012 R2 allows a denial of service vulnerability due to how specially crafted requests are handled, aka \"SMBv2/SMBv3 Null Dereference Denial of Service Vulnerability\".","status":"published","published":"2018-02-15T02:00:00Z","modified":"2024-09-17T01:21:53.733Z","updated_at":"2026-11-02T14:35:12.596526Z"}],"euvd":[{"id":"EUVD-2018-1638","description":"The Microsoft Server Message Block 2.0 and 3.0 (SMBv2/SMBv3) client in Windows 8.1 and RT 8.1 and Windows Server 2012 R2 allows a denial of service vulnerability due to how specially crafted requests are handled, aka \"SMBv2/SMBv3 Null Dereference Denial of Service Vulnerability\".","status":"published","published":"2018-02-15T02:00:00Z","modified":"2024-09-17T01:21:53Z","updated_at":"2026-11-03T00:28:50.234993Z"}],"ghsa":[{"id":"GHSA-m84f-8362-3v3c","title":"The Microsoft Server Message Block 2.0 and 3.0 (SMBv2/SMBv3) client in Windows 8.1 and RT 8.1 and...","description":"The Microsoft Server Message Block 2.0 and 3.0 (SMBv2/SMBv3) client in Windows 8.1 and RT 8.1 and Windows Server 2012 R2 allows a denial of service vulnerability due to how specially crafted requests are handled, aka \"SMBv2/SMBv3 Null Dereference Denial of Service Vulnerability\".","status":"published","published":"2022-05-14T01:21:35Z","modified":"2023-02-02T05:03:35Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:51:40.509164Z"}],"nvd":[{"id":"CVE-2018-0833","description":"The Microsoft Server Message Block 2.0 and 3.0 (SMBv2/SMBv3) client in Windows 8.1 and RT 8.1 and Windows Server 2012 R2 allows a denial of service vulnerability due to how specially crafted requests are handled, aka \"SMBv2/SMBv3 Null Dereference Denial of Service Vulnerability\".","status":"published","published":"2018-02-15T02:29:02.373Z","modified":"2026-06-17T01:31:45.62Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":6.3,"vector":"AV:N/AC:M/Au:S/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:04:22.897995Z"}]}}