CVE-2016-7480

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.

• CWE-119

• http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php-7Third Party Advisory, VDB Entry
• http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdfExploit, Technical Description, Third Party Advisory
• http://php.net/ChangeLog-7.phpRelease Notes, Vendor Advisory
• http://www.securityfocus.com/bid/95152Third Party Advisory, VDB Entry
• https://bugs.php.net/bug.php?id=73257Issue Tracking, Patch, Vendor Advisory
• https://github.com/php/php-src/commit/61cdd1255d5b9c8453be71aacbbf682796ac77d4Patch, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20180112-0001/Third Party Advisory
• https://www.youtube.com/watch?v=LDcaPstAuPkBroken Link, Third Party Advisory
• http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php-7Third Party Advisory, VDB Entry
• http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdfExploit, Technical Description, Third Party Advisory
• http://php.net/ChangeLog-7.phpRelease Notes, Vendor Advisory
• http://www.securityfocus.com/bid/95152Third Party Advisory, VDB Entry
• https://bugs.php.net/bug.php?id=73257Issue Tracking, Patch, Vendor Advisory
• https://github.com/php/php-src/commit/61cdd1255d5b9c8453be71aacbbf682796ac77d4Patch, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20180112-0001/Third Party Advisory
• https://www.youtube.com/watch?v=LDcaPstAuPkBroken Link, Third Party Advisory

Published

Jan 11, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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