{"id":"CVE-2015-4495","url":"https://www.cyber-defence.io/tools/cve/CVE-2015-4495","generatedAt":"2026-10-31T22:34:19.464Z","title":"Mozilla Firefox Security Feature Bypass Vulnerability","description":"The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypass the Same Origin Policy, and read arbitrary files or gain privileges, via vectors involving crafted JavaScript code and a native setter, as exploited in the wild in August 2015.","published":"2015-08-08T00:59:05.000Z","lastModified":"2026-06-17T00:27:24.000Z","status":"Analyzed","sourceIdentifier":"security@mozilla.org","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-346"],"affected":["mozilla/firefox","mozilla/firefox os","oracle/solaris","canonical/ubuntu linux","redhat/enterprise linux desktop","redhat/enterprise linux eus","redhat/enterprise linux server","redhat/enterprise linux server aus","redhat/enterprise linux server tus","redhat/enterprise linux workstation","suse/linux enterprise debuginfo","opensuse/opensuse","suse/linux enterprise desktop","suse/linux enterprise server","suse/linux enterprise software development kit"],"epss":{"score":0.68558,"percentile":0.99337,"date":"2026-10-30","history":[{"date":"2026-09-24","score":0.68558,"percentile":0.99315}]},"kev":{"listed":true,"dateAdded":"2022-05-25","dueDate":"2022-06-15","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2015-4495"},"exploits":{"count":1,"verified":false,"firstPublished":"2015-08-15","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":37772,"kind":"exploit","title":"Mozilla Firefox < 39.03 - 'pdf.js' Same Origin Policy","url":"https://www.exploit-db.com/exploits/37772","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/local/37772.js","file":"exploits/multiple/local/37772.js","published":"2015-08-15","added":"2015-08-15","updated":"2016-10-27","author":"Tantaryu MING","type":"local","platform":"multiple","port":null,"verified":false,"codes":["CVE-2015-4495","OSVDB-125839"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 15 June 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00009.html","tags":["Mailing List","Third Party Advisory"],"source":"security@mozilla.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00010.html","tags":["Mailing List","Third Party Advisory"],"source":"security@mozilla.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html","tags":["Mailing List","Third Party Advisory"],"source":"security@mozilla.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html","tags":["Mailing List","Third Party Advisory"],"source":"security@mozilla.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html","tags":["Mailing List","Third Party Advisory"],"source":"security@mozilla.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00016.html","tags":["Mailing List","Third Party Advisory"],"source":"security@mozilla.org"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-1581.html","tags":["Third Party Advisory"],"source":"security@mozilla.org"},{"url":"http://www.mozilla.org/security/announce/2015/mfsa2015-78.html","tags":["Vendor Advisory"],"source":"security@mozilla.org"},{"url":"http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html","tags":["Patch","Third Party Advisory"],"source":"security@mozilla.org"},{"url":"http://www.securityfocus.com/bid/76249","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"security@mozilla.org"},{"url":"http://www.securitytracker.com/id/1033216","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"security@mozilla.org"},{"url":"http://www.ubuntu.com/usn/USN-2707-1","tags":["Third Party Advisory"],"source":"security@mozilla.org"},{"url":"https://blog.mozilla.org/security/2015/08/06/firefox-exploit-found-in-the-wild/","tags":["Issue Tracking","Vendor Advisory"],"source":"security@mozilla.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1178058","tags":["Issue Tracking"],"source":"security@mozilla.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1179262","tags":["Issue Tracking"],"source":"security@mozilla.org"},{"url":"https://security.gentoo.org/glsa/201512-10","tags":["Third Party Advisory"],"source":"security@mozilla.org"},{"url":"https://www.exploit-db.com/exploits/37772/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"security@mozilla.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00009.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00010.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00016.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-1581.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mozilla.org/security/announce/2015/mfsa2015-78.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/76249","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1033216","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ubuntu.com/usn/USN-2707-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://blog.mozilla.org/security/2015/08/06/firefox-exploit-found-in-the-wild/","tags":["Issue Tracking","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1178058","tags":["Issue Tracking"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1179262","tags":["Issue Tracking"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201512-10","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/37772/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-4495","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2015-4495","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."}