CVE-2016-5772

Exp

Double free vulnerability in the php_wddx_process_data function in wddx.c in the WDDX extension in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via crafted XML data that is mishandled in a wddx_deserialize call.

Published: 2016-08-07 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-5772 is rated High Exploit Risk (87/100): CVSS Critical severity, with high exploitation likelihood (EPSS 15.93%, 95th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2016-5772

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2016-5772

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-19 16.29% 15.93% -0.35%
2 2026-02-18 15.93% 16.29% +0.35%
3 2026-01-17 — 15.93% —

Full EPSS history (25 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-5772

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2016-5772

OS Trackers for CVE-2016-5772

vendor priority summary link
redhat low — https://access.redhat.com/security/cve/CVE-2016-5772
suse medium CVE-2016-5772 severity moderate: SUSE including 318 source package names (apache2-mod_php5-5.2.14-0.7.30.89.1, apache2-mod_php5-5.5.14-68.1, …), 801 product×package rows across 22 product lines (SUSE Enterprise Storage 7.1, SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS, … (22 product lines)): Known Not Affected 508, Fixed 293. https://www.suse.com/security/cve/CVE-2016-5772/
ubuntu medium CVE-2016-5772 medium priority: Ubuntu including 2 source packages (php5, php7.0), 10 status rows across 5 suites (precise, trusty, upstream, wily, xenial): released 5, DNE 4, ignored 1. https://ubuntu.com/security/CVE-2016-5772

Affected software / configurations for CVE-2016-5772

Vendor Product Version Raw CPE
php php < 5.5.37 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php >= 5.6.0, < 5.6.23 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php >= 7.0.0, < 7.0.8 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
suse linux_enterprise_debuginfo 11 cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp4:*:*:*:*:*:*
opensuse leap 42.1 cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
opensuse opensuse 13.2 cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
suse linux_enterprise_server 11 cpe:2.3:o:suse:linux_enterprise_server:11:sp4:*:*:*:*:*:*
suse linux_enterprise_software_development_kit 11 cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp4:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

References for CVE-2016-5772

URL Tags
http://github.com/php/php-src/commit/a44c89e8af7c2410f4bfc5e097be2a5d0639a60c?w=1 Patch Third Party Advisory
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html Broken Link Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00025.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html Mailing List Third Party Advisory
http://php.net/ChangeLog-5.php Patch Release Notes Vendor Advisory
http://php.net/ChangeLog-7.php Release Notes Vendor Advisory
http://rhn.redhat.com/errata/RHSA-2016-2750.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3618 Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/06/23/4 Mailing List Patch Third Party Advisory
http://www.securityfocus.com/bid/91398 Third Party Advisory VDB Entry
https://bugs.php.net/bug.php?id=72340 Exploit Issue Tracking Vendor Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731 Third Party Advisory
https://support.apple.com/HT207170 Third Party Advisory
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