What’s Vulnerable › Vulnerabilities

CVE-2016-7480

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 41.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2017-01-11 · updated 2026-06-17
• Weakness: CWE-119

Description

The SplObjectStorage unserialize implementation in ext/spl/spl_observer.c in PHP before 7.0.12 does not verify that a key is an object, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized memory access) via crafted serialized data.

Affected products

• Clustered Data ONTAP: all versions
• PHP: from 7.0.0 before 7.0.11 — fixed in 7.0.11

How to fix

Upgrade to a fixed version: PHP 7.0.11. Check the vendor advisory for mitigations.

References

• http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php-7
• http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf
• http://php.net/ChangeLog-7.php
• http://www.securityfocus.com/bid/95152
• https://bugs.php.net/bug.php?id=73257
• https://github.com/php/php-src/commit/61cdd1255d5b9c8453be71aacbbf682796ac77d4
• https://security.netapp.com/advisory/ntap-20180112-0001/
• https://www.youtube.com/watch?v=LDcaPstAuPk
• http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php-7
• http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf
• http://php.net/ChangeLog-7.php
• http://www.securityfocus.com/bid/95152

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