CVE-2014-3669

CVE-2014-3669 is a high-severity vulnerability in Php with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 29% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-189.

Key facts

• Severity: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 29% (98th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-189
• Affected product: Php
• Published: 2014-10-29
• Last modified: 2026-06-17

Description

Integer overflow in the object_custom function in ext/standard/var_unserializer.c in PHP before 5.4.34, 5.5.x before 5.5.18, and 5.6.x before 5.6.2 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an argument to the unserialize function that triggers calculation of a large length value.

Frequently asked questions

What is CVE-2014-3669?

Integer overflow in the object_custom function in ext/standard/var_unserializer.c in PHP before 5.4.34, 5.5.x before 5.5.18, and 5.6.x before 5.6.2 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an argument to the unserialize function that triggers calculation of a large length value.

How severe is CVE-2014-3669?

CVE-2014-3669 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2014-3669 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 29% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-3669?

CVE-2014-3669 primarily affects Php. In total, 70 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-3669?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2014-3669 published?

CVE-2014-3669 was published on 2014-10-29 and last updated on 2026-06-17.

References

• http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=56754a7f9eba0e4f559b6ca081d9f2a447b3f159
• http://linux.oracle.com/errata/ELSA-2014-1767.html
• http://linux.oracle.com/errata/ELSA-2014-1768.html
• http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html
• http://lists.opensuse.org/opensuse-updates/2014-11/msg00024.html
• http://lists.opensuse.org/opensuse-updates/2014-11/msg00034.html
• http://lists.opensuse.org/opensuse-updates/2015-01/msg00006.html
• http://php.net/ChangeLog-5.php
• http://rhn.redhat.com/errata/RHSA-2014-1765.html
• http://rhn.redhat.com/errata/RHSA-2014-1766.html
• http://rhn.redhat.com/errata/RHSA-2014-1767.html
• http://rhn.redhat.com/errata/RHSA-2014-1768.html
• http://rhn.redhat.com/errata/RHSA-2014-1824.html
• http://secunia.com/advisories/59967
• http://secunia.com/advisories/60630
• http://secunia.com/advisories/60699
• http://secunia.com/advisories/61763
• http://secunia.com/advisories/61970
• http://secunia.com/advisories/61982
• http://www.debian.org/security/2014/dsa-3064
• http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
• http://www.securityfocus.com/bid/70611
• http://www.ubuntu.com/usn/USN-2391-1
• https://bugs.php.net/bug.php?id=68044
• https://bugzilla.redhat.com/show_bug.cgi?id=1154500
• https://support.apple.com/HT204659

Affected products (70)

• cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.0:*:*:*:*:*:*:*
• 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: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:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.31:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.4.32:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:5.5.0:alpha1:*:*:*:*:*:*

More vulnerabilities in Php

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• 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)…
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All CVEs affecting Php →

Other CWE-189 (Numeric Errors) vulnerabilities

• CVE-2015-8396 — Critical (CVSS 10.0): Integer overflow in the ImageRegionReader::ReadIntoBuffer function in…
• CVE-2015-7205 — Critical (CVSS 10.0): Integer underflow in the RTPReceiverVideo::ParseRtpPacket function in Mozilla Firefox before 43.0 and Firefox ESR 38.x…
• CVE-2015-6575 — Critical (CVSS 10.0): SampleTable.cpp in libstagefright in Android before 5.1.1 LMY48I does not properly consider integer promotion, which…
• CVE-2015-3864 — Critical (CVSS 10.0): Integer underflow in the MPEG4Extractor::parseChunk function in MPEG4Extractor.cpp in libstagefright in mediaserver in…
• CVE-2015-3836 — Critical (CVSS 10.0): The Parse_wave function in arm-wt-22k/lib_src/eas_mdls.c in the Sonivox DLS-to-EAS converter in Android before 5.1.1…
• CVE-2015-3834 — Critical (CVSS 10.0): Multiple integer overflows in the BnHDCP::onTransact function in media/libmedia/IHDCP.cpp in libstagefright in Android…

Browse all CWE-189 (Numeric Errors) 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)
• 113.164.66.10 (ipv4-addr)
• 103.38.219.22 (ipv4-addr)
• 103.20.122.54 (ipv4-addr)