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CVE-2014-3669

41
FAUCET Score

CVE-2014-3669 is an integer overflow vulnerability in the object_custom function of PHP versions before 5.4.34, 5.5.18, and 5.6.2. This flaw allows remote attackers to trigger a denial of service or potentially execute arbitrary code by supplying a specially crafted argument to the unserialize function. With a CVSS score of 7.5, it is considered highly severe due to its network-based attack vector, low complexity, and potential for partial confidentiality, integrity, and availability impact. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.4.33CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
5.4.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.4.0:*:*:*:*:*:*:*
5.4.1CPE matchmatch criteria
cpe:2.3:a:php:php:5.4.1:*:*:*:*:*:*:*
5.4.2CPE matchmatch criteria
cpe:2.3:a:php:php:5.4.2:*:*:*:*:*:*:*
5.4.3CPE matchmatch criteria
cpe:2.3:a:php:php:5.4.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
28.86%
Probability of exploitation in next 30 days
EPSS Percentile
98.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2886 is in the 97th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (15)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php53-0:5.3.3-26.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php-0:5.1.6-45.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: php-0:5.3.3-40.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.5 Extended Update SupportFixed in: php-0:5.3.3-27.el6_5.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: php-0:5.4.16-23.el7_0.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections 1 for Red Hat Enterprise Linux 6Fixed in: php54-php-0:5.4.16-22.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections 1 for Red Hat Enterprise Linux 6Fixed in: php55-php-0:5.5.6-13.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections 1 for Red Hat Enterprise Linux 6.4 EUSFixed in: php54-php-0:5.4.16-22.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections 1 for Red Hat Enterprise Linux 6.4 EUSFixed in: php55-php-0:5.5.6-13.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections 1 for Red Hat Enterprise Linux 6.5 EUSFixed in: php54-php-0:5.4.16-22.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections 1 for Red Hat Enterprise Linux 6.5 EUSFixed in: php55-php-0:5.5.6-13.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections 1 for Red Hat Enterprise Linux 6.6 EUSFixed in: php54-php-0:5.4.16-22.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections 1 for Red Hat Enterprise Linux 6.6 EUSFixed in: php55-php-0:5.5.6-13.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections 1 for Red Hat Enterprise Linux 7Fixed in: php54-php-0:5.4.16-22.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections 1 for Red Hat Enterprise Linux 7Fixed in: php55-php-0:5.5.6-13.el7
View patch

Vendor Advisories (1)

redhatCVE-2014-3669Moderate

php: integer overflow in unserialize()

Sep 18, 2014

References

git.php.net
linux.oracle.com / errata/ELSA-2014-1767.html
linux.oracle.com / errata/ELSA-2014-1768.html
lists.apple.com / archives/security-announce/2015/Apr/msg00001.html
lists.opensuse.org / opensuse-updates/2014-11/msg00024.html
lists.opensuse.org / opensuse-updates/2014-11/msg00034.html
lists.opensuse.org / opensuse-updates/2015-01/msg00006.html
php.net / ChangeLog-5.php
rhn.redhat.com / errata/RHSA-2014-1765.html
rhn.redhat.com / errata/RHSA-2014-1766.html
rhn.redhat.com / errata/RHSA-2014-1767.html
rhn.redhat.com / errata/RHSA-2014-1768.html
rhn.redhat.com / errata/RHSA-2014-1824.html
bugs.php.net / bug.php
ExploitPatchVendor Advisory
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/59967
secunia.com / advisories/60630
secunia.com / advisories/60699
secunia.com / advisories/61763
secunia.com / advisories/61970
secunia.com / advisories/61982
support.apple.com / HT204659
debian.org / security/2014/dsa-3064
oracle.com / technetwork/topics/security/bulletinjul2015-2511963.html
securityfocus.com / bid/70611
ubuntu.com / usn/USN-2391-1