{"id":"CVE-2015-0231","url":"https://www.cyber-defence.io/tools/cve/CVE-2015-0231","generatedAt":"2026-11-05T06:38:59.629Z","title":"Use-after-free vulnerability in the process_nested_data function in ext/standard/var_unserializer.re in PHP before 5.4.37, 5.5.x before 5.5.21, and 5.6.x before 5.6.5 allows remote attackers to execute arbitrary code via a crafted unserialize call that…","description":"Use-after-free vulnerability in the process_nested_data function in ext/standard/var_unserializer.re in PHP before 5.4.37, 5.5.x before 5.5.21, and 5.6.x before 5.6.5 allows remote attackers to execute arbitrary code via a crafted unserialize call that leverages improper handling of duplicate numerical keys within the serialized properties of an object.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8142.","published":"2015-01-27T20:03:41.000Z","lastModified":"2026-06-17T00:19:47.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":7.5,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P"},"cwe":[],"affected":["php/php"],"epss":{"score":0.44446,"percentile":0.98768,"date":"2026-11-04","history":[{"date":"2026-10-22","score":0.44446,"percentile":0.98762}]},"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 44.4%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://advisories.mageia.org/MGASA-2015-0040.html","source":"secalert@redhat.com"},{"url":"http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00029.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-updates/2015-02/msg00079.html","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=143403519711434&w=2","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=143748090628601&w=2","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=144050155601375&w=2","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-1053.html","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-1066.html","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-1135.html","source":"secalert@redhat.com"},{"url":"http://www.debian.org/security/2015/dsa-3195","source":"secalert@redhat.com"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2015:032","source":"secalert@redhat.com"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2015:079","source":"secalert@redhat.com"},{"url":"http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html","source":"secalert@redhat.com"},{"url":"http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html","source":"secalert@redhat.com"},{"url":"http://www.php.net/ChangeLog-5.php","source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/72539","source":"secalert@redhat.com"},{"url":"https://bugs.php.net/bug.php?id=68710","tags":["Exploit","Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1185397","source":"secalert@redhat.com"},{"url":"https://github.com/php/php-src/commit/b585a3aed7880a5fa5c18e2b838fc96f40e075bd","tags":["Patch","Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"https://security.gentoo.org/glsa/201503-03","source":"secalert@redhat.com"},{"url":"https://security.gentoo.org/glsa/201606-10","source":"secalert@redhat.com"},{"url":"https://support.apple.com/HT205267","source":"secalert@redhat.com"},{"url":"http://advisories.mageia.org/MGASA-2015-0040.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00029.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-updates/2015-02/msg00079.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=143403519711434&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=143748090628601&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=144050155601375&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-1053.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-1066.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-1135.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2015/dsa-3195","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2015:032","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2015:079","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.php.net/ChangeLog-5.php","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/72539","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.php.net/bug.php?id=68710","tags":["Exploit","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1185397","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/php/php-src/commit/b585a3aed7880a5fa5c18e2b838fc96f40e075bd","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201503-03","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201606-10","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/HT205267","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2015-0231","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."}