CVE-2015-0231
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…
Does this matter?
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.
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.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 44.45% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- php/php
- Source
- secalert@redhat.com
EPSS moved from 44.4% on 22 October 2026 to 44.4% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://advisories.mageia.org/MGASA-2015-0040.html
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00029.html
- http://lists.opensuse.org/opensuse-updates/2015-02/msg00079.html
- http://marc.info/?l=bugtraq&m=143403519711434&w=2
- http://marc.info/?l=bugtraq&m=143748090628601&w=2
- http://marc.info/?l=bugtraq&m=144050155601375&w=2
- http://rhn.redhat.com/errata/RHSA-2015-1053.html
- http://rhn.redhat.com/errata/RHSA-2015-1066.html
- http://rhn.redhat.com/errata/RHSA-2015-1135.html
- http://www.debian.org/security/2015/dsa-3195
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:032
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:079
- http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.php.net/ChangeLog-5.php
- http://www.securityfocus.com/bid/72539
- https://bugs.php.net/bug.php?id=68710Exploit, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1185397
- https://github.com/php/php-src/commit/b585a3aed7880a5fa5c18e2b838fc96f40e075bdPatch, Vendor Advisory
- https://security.gentoo.org/glsa/201503-03
- https://security.gentoo.org/glsa/201606-10
- https://support.apple.com/HT205267
- http://advisories.mageia.org/MGASA-2015-0040.html
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00029.html
- http://lists.opensuse.org/opensuse-updates/2015-02/msg00079.html
- http://marc.info/?l=bugtraq&m=143403519711434&w=2
- http://marc.info/?l=bugtraq&m=143748090628601&w=2
- http://marc.info/?l=bugtraq&m=144050155601375&w=2
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.