{"id":"CVE-2018-18366","aliases":["EUVD-2018-10097","GHSA-6mpj-9376-4g2w"],"status":"published","title":"Symantec Norton Security prior to 22.16.3, SEP (Windows client) prior to and including 12.1 RU6...","description":"Symantec Norton Security prior to 22.16.3, SEP (Windows client) prior to and including 12.1 RU6 MP9, and prior to 14.2 RU1, SEP SBE prior to Cloud Agent 3.00.31.2817, NIS-22.15.2.22, SEP-12.1.7484.7002 and SEP Cloud prior to 22.16.3 may be susceptible to a kernel memory disclosure, which is a type of issue where a specially crafted IRP request can cause the driver to return uninitialized memory.","severity":{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00386,"percentile":0.32962,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-908"],"published":"2019-04-25T19:13:05Z","modified":"2026-06-17T01:47:05Z","products":[{"vendor":"symantec","product":"endpoint_protection"},{"vendor":"symantec","product":"endpoint_protection_cloud"},{"vendor":"symantec","product":"endpoint_protection_cloud_agent"},{"vendor":"symantec","product":"norton_security"},{"vendor":"symantec corporation","product":"norton security"},{"vendor":"symantec corporation","product":"sep (windows client)"},{"vendor":"symantec corporation","product":"sep cloud"},{"vendor":"symantec corporation","product":"sep sbe"}],"references":[{"url":"https://support.symantec.com/en_US/article.SYMSA1479.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/107994","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-18366"},{"url":"https://github.com/advisories/GHSA-6mpj-9376-4g2w"}],"sources":{"cve":[{"id":"CVE-2018-18366","description":"Symantec Norton Security prior to 22.16.3, SEP (Windows client) prior to and including 12.1 RU6 MP9, and prior to 14.2 RU1, SEP SBE prior to Cloud Agent 3.00.31.2817, NIS-22.15.2.22, SEP-12.1.7484.7002 and SEP Cloud prior to 22.16.3 may be susceptible to a kernel memory disclosure, which is a type of issue where a specially crafted IRP request can cause the driver to return uninitialized memory.","status":"published","published":"2019-04-25T19:13:05Z","modified":"2024-08-05T11:08:21.47Z","updated_at":"2026-11-02T14:35:11.799349Z"}],"euvd":[{"id":"EUVD-2018-10097","description":"Symantec Norton Security prior to 22.16.3, SEP (Windows client) prior to and including 12.1 RU6 MP9, and prior to 14.2 RU1, SEP SBE prior to Cloud Agent 3.00.31.2817, NIS-22.15.2.22, SEP-12.1.7484.7002 and SEP Cloud prior to 22.16.3 may be susceptible to a kernel memory disclosure, which is a type of issue where a specially crafted IRP request can cause the driver to return uninitialized memory.","status":"published","published":"2019-04-25T19:13:05Z","modified":"2024-08-05T11:08:21Z","updated_at":"2026-11-03T02:39:36.317092Z"}],"ghsa":[{"id":"GHSA-6mpj-9376-4g2w","title":"Symantec Norton Security prior to 22.16.3, SEP (Windows client) prior to and including 12.1 RU6...","description":"Symantec Norton Security prior to 22.16.3, SEP (Windows client) prior to and including 12.1 RU6 MP9, and prior to 14.2 RU1, SEP SBE prior to Cloud Agent 3.00.31.2817, NIS-22.15.2.22, SEP-12.1.7484.7002 and SEP Cloud prior to 22.16.3 may be susceptible to a kernel memory disclosure, which is a type of issue where a specially crafted IRP request can cause the driver to return uninitialized memory.","status":"published","published":"2022-05-24T16:44:41Z","modified":"2023-01-28T05:05:19Z","updated_at":"2026-11-02T14:44:20.029387Z"}],"nvd":[{"id":"CVE-2018-18366","description":"Symantec Norton Security prior to 22.16.3, SEP (Windows client) prior to and including 12.1 RU6 MP9, and prior to 14.2 RU1, SEP SBE prior to Cloud Agent 3.00.31.2817, NIS-22.15.2.22, SEP-12.1.7484.7002 and SEP Cloud prior to 22.16.3 may be susceptible to a kernel memory disclosure, which is a type of issue where a specially crafted IRP request can cause the driver to return uninitialized memory.","status":"published","published":"2019-04-25T20:29:02.177Z","modified":"2026-06-17T01:47:05.107Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T14:04:55.136632Z"}]}}