CVE-2016-5771
spl_array.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 15.5%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
spl_array.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 15.48% probability · 97th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- php/php · opensuse/leap · opensuse/opensuse · debian/debian linux
- Source
- cve@mitre.org
EPSS 15.5% since 4 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://github.com/php/php-src/commit/3f627e580acfdaf0595ae3b115b8bec677f203ee?w=1Patch, Third Party Advisory
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.htmlBroken Link, Mailing List
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.htmlMailing List, Third Party Advisory
- http://php.net/ChangeLog-5.phpPatch, Release Notes, Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2750.htmlThird Party Advisory
- http://www.debian.org/security/2016/dsa-3618Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/06/23/4Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/91401Third Party Advisory, VDB Entry
- https://bugs.php.net/bug.php?id=72433Exploit, Issue Tracking, Vendor Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731Third Party Advisory
- https://support.apple.com/HT207170Third Party Advisory
- http://github.com/php/php-src/commit/3f627e580acfdaf0595ae3b115b8bec677f203ee?w=1Patch, Third Party Advisory
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.htmlBroken Link, Mailing List
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.htmlMailing List, Third Party Advisory
- http://php.net/ChangeLog-5.phpPatch, Release Notes, Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2750.htmlThird Party Advisory
- http://www.debian.org/security/2016/dsa-3618Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/06/23/4Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/91401Third Party Advisory, VDB Entry
- https://bugs.php.net/bug.php?id=72433Exploit, Issue Tracking, Vendor Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731Third Party Advisory
- https://support.apple.com/HT207170Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.