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CVE-2015-2783

20
FAUCET Score

CVE-2015-2783 is a buffer over-read vulnerability in PHP versions before 5.4.40, 5.5.24, and 5.6.8, affecting the phar extension and potentially impacting Apple and Red Hat systems. An unauthenticated remote attacker can exploit this by providing a crafted phar archive, leading to sensitive information disclosure from process memory or a denial of service due to an application crash. The vulnerability has a CVSS score of 5.8, indicating a medium severity with network access and medium attack complexity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.4.39CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
5.5.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:*
5.5.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.5.0:alpha1:*:*:*:*:*:*
5.5.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.5.0:alpha2:*:*:*:*:*:*
5.5.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.5.0:alpha3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:N/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
10.88%
Probability of exploitation in next 30 days
EPSS Percentile
95.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1088 is in the 95th percentile among its peer group of 19,956 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (26)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: php-0:5.3.3-46.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: php-0:5.4.16-36.el7_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: php54-0:2.0-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: php54-php-0:5.4.40-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: php54-php-pecl-zendopcache-0:7.0.4-3.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: php55-php-0:5.5.21-4.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-php56-php-0:5.6.5-7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUSFixed in: php54-0:2.0-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUSFixed in: php54-php-0:5.4.40-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUSFixed in: php54-php-pecl-zendopcache-0:7.0.4-3.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUSFixed in: php55-php-0:5.5.21-4.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUSFixed in: rh-php56-php-0:5.6.5-7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUSFixed in: php54-0:2.0-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUSFixed in: php54-php-0:5.4.40-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUSFixed in: php54-php-pecl-zendopcache-0:7.0.4-3.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUSFixed in: php55-php-0:5.5.21-4.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUSFixed in: rh-php56-php-0:5.6.5-7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: php54-0:2.0-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: php54-php-0:5.4.40-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: php54-php-pecl-zendopcache-0:7.0.4-3.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: php55-php-0:5.5.21-4.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-php56-php-0:5.6.5-7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUSFixed in: php55-php-0:5.5.21-4.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUSFixed in: rh-php56-php-0:5.6.5-7.el7
View patch
redhatno patchvia redhat_api
Product: Red Hat Software CollectionsFixed in: php54-php
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php53

Vendor Advisories (1)

redhatCVE-2015-2783Low

php: buffer over-read in Phar metadata parsing

Apr 16, 2015

References

lists.apple.com / archives/security-announce/2015/Aug/msg00001.html
lists.apple.com / archives/security-announce/2015/Sep/msg00008.html
lists.opensuse.org / opensuse-security-announce/2015-05/msg00004.html
lists.opensuse.org / opensuse-security-announce/2015-05/msg00005.html
marc.info
php.net / ChangeLog-5.php
Patch
rhn.redhat.com / errata/RHSA-2015-1066.html
rhn.redhat.com / errata/RHSA-2015-1135.html
rhn.redhat.com / errata/RHSA-2015-1186.html
rhn.redhat.com / errata/RHSA-2015-1187.html
rhn.redhat.com / errata/RHSA-2015-1218.html
bugs.php.net / bug.php
Exploit
security.gentoo.org / glsa/201606-10
support.apple.com / HT205267
support.apple.com / kb/HT205031
debian.org / security/2015/dsa-3280
oracle.com / technetwork/topics/security/bulletinjul2015-2511963.html
oracle.com / technetwork/topics/security/linuxbulletinjan2016-2867209.html
securityfocus.com / bid/74239
securitytracker.com / id/1032146
ubuntu.com / usn/USN-2572-1