{"id":"CVE-2016-4121","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-4121","generatedAt":"2026-10-27T18:46:29.086Z","title":"Use-after-free vulnerability in Adobe Flash Player before 18.0.0.352 and 19.x through 21.x before 21.0.0.242 on Windows and OS X and before 11.2.202.621 on Linux allows attackers to execute arbitrary code via unspecified vectors, a different…","description":"Use-after-free vulnerability in Adobe Flash Player before 18.0.0.352 and 19.x through 21.x before 21.0.0.242 on Windows and OS X and before 11.2.202.621 on Linux allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2016-1097, CVE-2016-1106, CVE-2016-1107, CVE-2016-1108, CVE-2016-1109, CVE-2016-1110, CVE-2016-4108, and CVE-2016-4110.","published":"2016-06-16T14:59:02.000Z","lastModified":"2026-06-17T00:46:56.000Z","status":"Modified","sourceIdentifier":"psirt@adobe.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-416"],"affected":["adobe/flash player","adobe/air sdk \\& compiler","adobe/air sdk","adobe/flash player desktop runtime","adobe/air desktop runtime"],"epss":{"score":0.10004,"percentile":0.95577,"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":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 10.0%, higher than 96% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://rhn.redhat.com/errata/RHSA-2016-1079.html","tags":["Third Party Advisory"],"source":"psirt@adobe.com"},{"url":"http://www.securityfocus.com/bid/90797","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"psirt@adobe.com"},{"url":"https://helpx.adobe.com/security/products/flash-player/apsb16-15.html","tags":["Patch","Vendor Advisory"],"source":"psirt@adobe.com"},{"url":"https://security.gentoo.org/glsa/201606-08","tags":["Third Party Advisory"],"source":"psirt@adobe.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2016-1079.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/90797","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://helpx.adobe.com/security/products/flash-player/apsb16-15.html","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201606-08","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-4121","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."}