CVE-2016-9936

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-01-04 · updated 2026-06-17
Weakness: CWE-416

Description

The unserialize implementation in ext/standard/var.c in PHP 7.x before 7.0.14 allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted serialized data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-6834.

Affected products

PHP: 7.0.0, 7.0.1, 7.0.2, 7.0.3, 7.0.4, 7.0.5 (+8)

References

http://lists.opensuse.org/opensuse-updates/2017-01/msg00034.html
http://www.openwall.com/lists/oss-security/2016/12/12/2
http://www.php.net/ChangeLog-7.php
http://www.securityfocus.com/bid/94849
https://access.redhat.com/errata/RHSA-2018:1296
https://bugs.php.net/bug.php?id=72978
https://github.com/php/php-src/commit/b2af4e8868726a040234de113436c6e4f6372d17
http://lists.opensuse.org/opensuse-updates/2017-01/msg00034.html
http://www.openwall.com/lists/oss-security/2016/12/12/2
http://www.php.net/ChangeLog-7.php
http://www.securityfocus.com/bid/94849
https://access.redhat.com/errata/RHSA-2018:1296

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