CVE-2016-4473

Exp

/ext/phar/phar_object.c in PHP 7.0.7 and 5.6.x allows remote attackers to execute arbitrary code. NOTE: Introduced as part of an incomplete fix to CVE-2015-6833.

Published: 2017-06-08 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-4473 is rated High Exploit Risk (82.9/100): CVSS Critical severity, with high exploitation likelihood (EPSS 16.82%, 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-2016-4473

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

Exploit prediction scoring system (EPSS) score for CVE-2016-4473

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 2026-02-09 21.26% 16.82% -4.45%
2 2025-12-28 20.36% 21.26% +0.90%
3 2025-12-27 — 20.36% —

Full EPSS history (23 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-4473

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/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-2016-4473

OS Trackers for CVE-2016-4473

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2016-4473
suse low CVE-2016-4473 severity low: SUSE including 209 source package names (apache2-mod_php53, apache2-mod_php7, …), 518 product×package rows across 21 product lines (SUSE Enterprise Storage 7.1, SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS, … (21 product lines)): Known Not Affected 460, Fixed 58. https://www.suse.com/security/cve/CVE-2016-4473/
ubuntu medium CVE-2016-4473 medium priority: Ubuntu including 2 source packages (php5, php7.0), 8 status rows across 4 suites (precise, trusty, upstream, xenial): DNE 3, not-affected 3, needs-triage 1, released 1. https://ubuntu.com/security/CVE-2016-4473

Affected software / configurations for CVE-2016-4473

Vendor Product Version Raw CPE
php php 5.6.0 cpe:2.3:a:php:php:5.6.0:alpha1:*:*:*:*:*:*
php php 5.6.0 cpe:2.3:a:php:php:5.6.0:alpha2:*:*:*:*:*:*
php php 5.6.0 cpe:2.3:a:php:php:5.6.0:alpha3:*:*:*:*:*:*
php php 5.6.0 cpe:2.3:a:php:php:5.6.0:alpha4:*:*:*:*:*:*
php php 5.6.0 cpe:2.3:a:php:php:5.6.0:alpha5:*:*:*:*:*:*
php php 5.6.0 cpe:2.3:a:php:php:5.6.0:beta1:*:*:*:*:*:*
php php 5.6.0 cpe:2.3:a:php:php:5.6.0:beta2:*:*:*:*:*:*
php php 5.6.0 cpe:2.3:a:php:php:5.6.0:beta3:*:*:*:*:*:*
php php 5.6.0 cpe:2.3:a:php:php:5.6.0:beta4:*:*:*:*:*:*
php php 5.6.1 cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:*
php php 5.6.2 cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:*
php php 5.6.3 cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:*
php php 5.6.4 cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:*
php php 5.6.5 cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:*
php php 5.6.6 cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:*
php php 5.6.7 cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:*
php php 5.6.8 cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:*
php php 5.6.9 cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:*
php php 5.6.10 cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:*
php php 5.6.11 cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:*
php php 5.6.12 cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:*
php php 5.6.13 cpe:2.3:a:php:php:5.6.13:*:*:*:*:*:*:*
php php 5.6.14 cpe:2.3:a:php:php:5.6.14:*:*:*:*:*:*:*
php php 5.6.15 cpe:2.3:a:php:php:5.6.15:*:*:*:*:*:*:*
php php 5.6.16 cpe:2.3:a:php:php:5.6.16:*:*:*:*:*:*:*
php php 5.6.17 cpe:2.3:a:php:php:5.6.17:*:*:*:*:*:*:*
php php 5.6.18 cpe:2.3:a:php:php:5.6.18:*:*:*:*:*:*:*
php php 5.6.19 cpe:2.3:a:php:php:5.6.19:*:*:*:*:*:*:*
php php 5.6.20 cpe:2.3:a:php:php:5.6.20:*:*:*:*:*:*:*
php php 5.6.21 cpe:2.3:a:php:php:5.6.21:*:*:*:*:*:*:*
php php 5.6.22 cpe:2.3:a:php:php:5.6.22:*:*:*:*:*:*:*
php php 7.0.7 cpe:2.3:a:php:php:7.0.7:*:*:*:*:*:*:*
suse linux_enterprise_module_for_web_scripting 12 cpe:2.3:o:suse:linux_enterprise_module_for_web_scripting:12:*:*:*:*:*:*:*
suse linux_enterprise_software_development_kit 12 cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:sp1:*:*:*:*:*:*

References for CVE-2016-4473

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00007.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2750.html Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/98999 Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1347772 Exploit Issue Tracking Patch Third Party Advisory VDB Entry
cvelogic Threat Intelligence