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CVE-2016-5772

28
FAUCET Score

CVE-2016-5772 is a critical double free vulnerability in the WDDX extension of PHP, affecting versions before 5.5.37, 5.6.23, and 7.0.8, as well as various Linux distributions. This flaw allows remote attackers to trigger a denial of service or potentially execute arbitrary code by supplying crafted XML data to a wddx_deserialize call. With a CVSS score of 9.8, it presents a high-severity risk due to its network-based attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. Despite its critical severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.5.37CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 5.6.0, < 5.6.23CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.0.8CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
11CPE matchmatch criteria
cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp4:*:*:*:*:*:*
42.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
9.67%
Probability of exploitation in next 30 days
EPSS Percentile
95.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0967 is in the 91st percentile among its peer group of 36,835 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (22)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-php56-0:2.3-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-php56-php-0:5.6.25-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-php56-php-pear-1:1.9.5-4.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-php56-0:2.3-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-php56-php-0:5.6.25-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-php56-php-pear-1:1.9.5-4.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-php56-0:2.3-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-php56-php-0:5.6.25-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-php56-php-pear-1:1.9.5-4.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUSFixed in: rh-php56-0:2.3-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUSFixed in: rh-php56-php-0:5.6.25-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUSFixed in: rh-php56-php-pear-1:1.9.5-4.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-php56-0:2.3-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-php56-php-0:5.6.25-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-php56-php-pear-1:1.9.5-4.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php53
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: php54-php
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: php55-php

Vendor Advisories (1)

redhatCVE-2016-5772Low

php: Double Free Corruption in wddx_deserialize

Jun 23, 2016

References

github.com / php/php-src/commit/a44c89e8af7c2410f4bfc5e097be2a5d0639a60c
PatchThird Party Advisory
lists.apple.com / archives/security-announce/2016/Sep/msg00006.html
Broken LinkMailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-07/msg00004.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-08/msg00025.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2016-08/msg00003.html
Mailing ListThird Party Advisory
php.net / ChangeLog-5.php
PatchRelease NotesVendor Advisory
php.net / ChangeLog-7.php
Release NotesVendor Advisory
rhn.redhat.com / errata/RHSA-2016-2750.html
Third Party Advisory
bugs.php.net / bug.php
ExploitIssue TrackingVendor Advisory
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
Third Party Advisory
support.apple.com / HT207170
Third Party Advisory
debian.org / security/2016/dsa-3618
Third Party Advisory
openwall.com / lists/oss-security/2016/06/23/4
Mailing ListPatchThird Party Advisory
securityfocus.com / bid/91398
Third Party AdvisoryVDB Entry