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CVE-2014-3597

24
FAUCET Score

CVE-2014-3597 is a critical vulnerability affecting PHP versions before 5.4.32 and 5.5.16, specifically within the php_parserr function in ext/standard/dns.c. This flaw, stemming from an incomplete fix for CVE-2014-4049, involves multiple buffer overflows that can be triggered by remote DNS servers sending crafted DNS records. The vulnerability has a CVSS score of 6.8, indicating a medium to high severity, as it can lead to a denial of service (application crash) or potentially arbitrary code execution. There is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.4.31CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
5.4.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.4.0:*:*:*:*:*:*:*
5.4.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.4.0:beta2:*:*:*:*:*:*
5.4.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.4.0:beta2:32-bit:*:*:*:*:*
5.4.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.4.0:rc2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
15.43%
Probability of exploitation in next 30 days
EPSS Percentile
96.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1543 is in the 97th 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 (13)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php53-0:5.3.3-24.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: php-0:5.3.3-27.el6_5.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: php-0:5.4.16-23.el7_0.1
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-2014-3597Low

php: multiple buffer over-reads in php_parserr

Jul 30, 2014

References

lists.apple.com / archives/security-announce/2015/Apr/msg00001.html
lists.opensuse.org / opensuse-updates/2014-09/msg00024.html
lists.opensuse.org / opensuse-updates/2014-09/msg00055.html
php.net / ChangeLog-5.php
rhn.redhat.com / errata/RHSA-2014-1326.html
rhn.redhat.com / errata/RHSA-2014-1327.html
rhn.redhat.com / errata/RHSA-2014-1765.html
rhn.redhat.com / errata/RHSA-2014-1766.html
bugs.php.net / bug.php
Vendor Advisory
secunia.com / advisories/60609
secunia.com / advisories/60696
github.com / php/php-src/commit/2fefae47716d501aec41c1102f3fd4531f070b05
security-tracker.debian.org / tracker/CVE-2014-3597
support.apple.com / HT204659
debian.org / security/2014/dsa-3008
oracle.com / technetwork/topics/security/bulletinjan2015-2370101.html
securityfocus.com / bid/69322
ubuntu.com / usn/USN-2344-1