CVE-2016-7129

CVE-2016-7129 is a critical-severity vulnerability in Php with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

• Severity: Critical (CVSS 3.x base score 9.8)
• CVSS v2: 7.5
• EPSS exploit prediction: 7% (93rd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-20
• Affected product: Php
• Published: 2016-09-12
• Last modified: 2026-06-17

Description

The php_wddx_process_data function in ext/wddx/wddx.c in PHP before 5.6.25 and 7.x before 7.0.10 allows remote attackers to cause a denial of service (segmentation fault) or possibly have unspecified other impact via an invalid ISO 8601 time value, as demonstrated by a wddx_deserialize call that mishandles a dateTime element in a wddxPacket XML document.

Frequently asked questions

What is CVE-2016-7129?

The php_wddx_process_data function in ext/wddx/wddx.c in PHP before 5.6.25 and 7.x before 7.0.10 allows remote attackers to cause a denial of service (segmentation fault) or possibly have unspecified other impact via an invalid ISO 8601 time value, as demonstrated by a wddx_deserialize call that mishandles a dateTime element in a wddxPacket XML document.

How severe is CVE-2016-7129?

CVE-2016-7129 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-7129 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-7129?

CVE-2016-7129 primarily affects Php. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-7129?

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

When was CVE-2016-7129 published?

CVE-2016-7129 was published on 2016-09-12 and last updated on 2026-06-17.

References

• http://openwall.com/lists/oss-security/2016/09/02/9
• http://rhn.redhat.com/errata/RHSA-2016-2750.html
• http://www.php.net/ChangeLog-5.php
• http://www.php.net/ChangeLog-7.php
• http://www.securityfocus.com/bid/92758
• http://www.securitytracker.com/id/1036680
• https://bugs.php.net/bug.php?id=72749
• https://github.com/php/php-src/commit/426aeb2808955ee3d3f52e0cfb102834cdb836a5?w=1
• https://security.gentoo.org/glsa/201611-22
• https://www.tenable.com/security/tns-2016-19

Affected products (11)

• cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:*:*:*:*:*:*:*:*

More vulnerabilities in Php

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• 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…

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Threat intelligence

Threat-intel indicators referencing this CVE:

• 45.84.120.3 (ipv4-addr)
• 79.137.34.248 (ipv4-addr)
• 221.161.235.168 (ipv4-addr)
• 200.196.50.91 (ipv4-addr)
• 187.51.208.158 (ipv4-addr)
• 187.141.71.166 (ipv4-addr)
• 187.110.238.50 (ipv4-addr)
• 113.164.66.10 (ipv4-addr)