{"id":"CVE-2016-5311","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-5311","generatedAt":"2026-10-27T19:48:55.899Z","title":"A Privilege Escalation vulnerability exists in Symantec Norton Antivirus, Norton AntiVirus with Backup, Norton Security, Norton Security with Backup, Norton Internet Security, Norton 360, Endpoint Protection Small Business Edition Cloud, and Endpoint…","description":"A Privilege Escalation vulnerability exists in Symantec Norton Antivirus, Norton AntiVirus with Backup, Norton Security, Norton Security with Backup, Norton Internet Security, Norton 360, Endpoint Protection Small Business Edition Cloud, and Endpoint Protection Cloud Client due to a DLL-preloading without path restrictions, which could let a local malicious user obtain system privileges.","published":"2020-01-09T20:15:11.000Z","lastModified":"2026-06-17T00:49:12.000Z","status":"Modified","sourceIdentifier":"secure@symantec.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-427"],"affected":["symantec/endpoint protection","symantec/endpoint protection cloud","symantec/norton 360","symantec/norton antivirus","symantec/norton antivirus with backup","symantec/norton family","symantec/norton internet security","symantec/norton security","symantec/norton security with backup"],"epss":{"score":0.00714,"percentile":0.53429,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.71%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/94295","tags":["Third Party Advisory","VDB Entry"],"source":"secure@symantec.com"},{"url":"http://www.securitytracker.com/id/1037323","tags":["Third Party Advisory","VDB Entry"],"source":"secure@symantec.com"},{"url":"http://www.securitytracker.com/id/1037324","tags":["Third Party Advisory","VDB Entry"],"source":"secure@symantec.com"},{"url":"http://www.securitytracker.com/id/1037325","tags":["Third Party Advisory","VDB Entry"],"source":"secure@symantec.com"},{"url":"https://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20161117_00","tags":["Vendor Advisory"],"source":"secure@symantec.com"},{"url":"http://www.securityfocus.com/bid/94295","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1037323","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1037324","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1037325","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20161117_00","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-5311","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}