CVE-2015-2783

Exp

ext/phar/phar.c in PHP before 5.4.40, 5.5.x before 5.5.24, and 5.6.x before 5.6.8 allows remote attackers to obtain sensitive information from process memory or cause a denial of service (buffer over-read and application crash) via a crafted length value in conjunction with crafted serialized data in a phar archive, related to the phar_parse_metadata and phar_parse_pharfile functions.

Published: 2015-06-09 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-2783 is rated High Exploit Risk (72.8/100): CVSS Medium severity, with high exploitation likelihood (EPSS 10.88%, 95th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.20% over the last day, indicating growing attacker interest. 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-2015-2783

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

Exploit prediction scoring system (EPSS) score for CVE-2015-2783

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 2026-06-15 9.68% 10.88% +1.20%
2 2026-03-04 5.30% 9.68% +4.38%
3 2026-03-01 — 5.30% —

Full EPSS history (44 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-2783

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 4.9 [email protected]

Weakness enumeration for CVE-2015-2783

OS Trackers for CVE-2015-2783

vendor priority summary link
gentoo normal CVE-2015-2783: 1 GLSA(s) (201606-10), 1 atom(s) (dev-lang/php); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-2783
redhat low — https://access.redhat.com/security/cve/CVE-2015-2783
ubuntu medium CVE-2015-2783 medium priority: Ubuntu including 1 source packages (php5), 5 status rows across 5 suites (lucid, precise, trusty, upstream, utopic): released 4, needs-triage 1. https://ubuntu.com/security/CVE-2015-2783

Affected software / configurations for CVE-2015-2783

Vendor Product Version Raw CPE
php php <= 5.4.39 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:alpha1:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:alpha2:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:alpha3:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:alpha4:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:alpha5:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:alpha6:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:beta1:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:beta2:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:beta3:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:beta4:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:rc1:*:*:*:*:*:*
php php 5.5.0 cpe:2.3:a:php:php:5.5.0:rc2:*:*:*:*:*:*
php php 5.5.1 cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:*
php php 5.5.2 cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:*
php php 5.5.3 cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:*
php php 5.5.4 cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:*
php php 5.5.5 cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:*
php php 5.5.6 cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:*
php php 5.5.7 cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:*
php php 5.5.8 cpe:2.3:a:php:php:5.5.8:*:*:*:*:*:*:*
php php 5.5.9 cpe:2.3:a:php:php:5.5.9:*:*:*:*:*:*:*
php php 5.5.10 cpe:2.3:a:php:php:5.5.10:*:*:*:*:*:*:*
php php 5.5.11 cpe:2.3:a:php:php:5.5.11:*:*:*:*:*:*:*
php php 5.5.12 cpe:2.3:a:php:php:5.5.12:*:*:*:*:*:*:*
php php 5.5.13 cpe:2.3:a:php:php:5.5.13:*:*:*:*:*:*:*
php php 5.5.14 cpe:2.3:a:php:php:5.5.14:*:*:*:*:*:*:*
php php 5.5.18 cpe:2.3:a:php:php:5.5.18:*:*:*:*:*:*:*
php php 5.5.19 cpe:2.3:a:php:php:5.5.19:*:*:*:*:*:*:*
php php 5.5.20 cpe:2.3:a:php:php:5.5.20:*:*:*:*:*:*:*
php php 5.5.21 cpe:2.3:a:php:php:5.5.21:*:*:*:*:*:*:*
php php 5.5.22 cpe:2.3:a:php:php:5.5.22:*:*:*:*:*:*:*
php php 5.5.23 cpe:2.3:a:php:php:5.5.23:*:*:*:*:*:*:*
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 5.6.2 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:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 7.0 cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_hpc_node 7.0 cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_hpc_node_eus 7.1 cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.1:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 7.1 cpe:2.3:o:redhat:enterprise_linux_server_eus:7.1:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
redhat enterprise_linux 6.0 cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
redhat enterprise_linux 7.0 cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
apple mac_os_x <= 10.10.5 cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

References for CVE-2015-2783

URL Tags
http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00005.html
http://marc.info/?l=bugtraq&m=143403519711434&w=2
http://php.net/ChangeLog-5.php Patch
http://rhn.redhat.com/errata/RHSA-2015-1066.html
http://rhn.redhat.com/errata/RHSA-2015-1135.html
http://rhn.redhat.com/errata/RHSA-2015-1186.html
http://rhn.redhat.com/errata/RHSA-2015-1187.html
http://rhn.redhat.com/errata/RHSA-2015-1218.html
http://www.debian.org/security/2015/dsa-3280
http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.securityfocus.com/bid/74239
http://www.securitytracker.com/id/1032146
http://www.ubuntu.com/usn/USN-2572-1
https://bugs.php.net/bug.php?id=69324 Exploit
https://security.gentoo.org/glsa/201606-10
https://support.apple.com/HT205267
https://support.apple.com/kb/HT205031
cvelogic Threat Intelligence