CVE-2014-3597

CVE-2014-3597 is a medium-severity vulnerability in Php with a CVSS 2.0 base score of 6.8. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

• Severity: Medium (CVSS 2.0 base score 6.8)
• EPSS exploit prediction: 15% (96th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Php
• Published: 2014-08-23
• Last modified: 2026-06-17

Description

Multiple buffer overflows in the php_parserr function in ext/standard/dns.c in PHP before 5.4.32 and 5.5.x before 5.5.16 allow remote DNS servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted DNS record, related to the dns_get_record function and the dn_expand function. NOTE: this issue exists because of an incomplete fix for CVE-2014-4049.

Frequently asked questions

What is CVE-2014-3597?

Multiple buffer overflows in the php_parserr function in ext/standard/dns.c in PHP before 5.4.32 and 5.5.x before 5.5.16 allow remote DNS servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted DNS record, related to the dns_get_record function and the dn_expand function. NOTE: this issue exists because of an incomplete fix for CVE-2014-4049.

How severe is CVE-2014-3597?

CVE-2014-3597 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2014-3597 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-3597?

CVE-2014-3597 primarily affects Php. In total, 68 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-3597?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-3597 published?

CVE-2014-3597 was published on 2014-08-23 and last updated on 2026-06-17.

References

• http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html
• http://lists.opensuse.org/opensuse-updates/2014-09/msg00024.html
• http://lists.opensuse.org/opensuse-updates/2014-09/msg00055.html
• http://php.net/ChangeLog-5.php
• http://rhn.redhat.com/errata/RHSA-2014-1326.html
• http://rhn.redhat.com/errata/RHSA-2014-1327.html
• http://rhn.redhat.com/errata/RHSA-2014-1765.html
• http://rhn.redhat.com/errata/RHSA-2014-1766.html
• http://secunia.com/advisories/60609
• http://secunia.com/advisories/60696
• http://www.debian.org/security/2014/dsa-3008
• http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
• http://www.securityfocus.com/bid/69322
• http://www.ubuntu.com/usn/USN-2344-1
• https://bugs.php.net/bug.php?id=67717
• https://github.com/php/php-src/commit/2fefae47716d501aec41c1102f3fd4531f070b05
• https://security-tracker.debian.org/tracker/CVE-2014-3597
• https://support.apple.com/HT204659

Affected products (68)

• cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.0:beta2:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.0:beta2:32-bit:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.0:rc2:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.2:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.3:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.4:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.5:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.6:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.7:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.8:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.9:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.10:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.11:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.12:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.12:rc1:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.12:rc2:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.13:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.13:rc1:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.14:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.14:rc1:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.15:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.15:rc1:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.16:rc1:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.17:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.18:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.19:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.20:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.21:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.22:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.23:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.24:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.25:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.26:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.27:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.28:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.29:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.30:*:*:*:*:*:*:*

More vulnerabilities in Php

• CVE-2015-0235 — Critical (CVSS 10.0): Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and other 2.x versions before 2.18,…
• CVE-2012-2688 — Critical (CVSS 10.0): Unspecified vulnerability in the _php_stream_scandir function in the stream implementation in PHP before 5.3.15 and…
• CVE-2012-2376 — Critical (CVSS 10.0): Buffer overflow in the com_print_typeinfo function in PHP 5.4.3 and earlier on Windows allows remote attackers to…
• CVE-2011-3268 — Critical (CVSS 10.0): Buffer overflow in the crypt function in PHP before 5.3.7 allows context-dependent attackers to have an unspecified…
• CVE-2009-4143 — Critical (CVSS 10.0): PHP before 5.2.12 does not properly handle session data, which has unspecified impact and attack vectors related to (1)…
• CVE-2008-5557 — Critical (CVSS 10.0): Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0…

All CVEs affecting Php →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

• CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
• CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
• CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
• CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
• CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
• CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

• 45.84.120.3 (ipv4-addr)
• 221.161.235.168 (ipv4-addr)
• 200.196.50.91 (ipv4-addr)
• 187.141.71.166 (ipv4-addr)
• 187.110.238.50 (ipv4-addr)
• 116.255.252.44 (ipv4-addr)
• 113.164.66.10 (ipv4-addr)
• 103.38.219.22 (ipv4-addr)