What’s Vulnerable › Vulnerabilities

CVE-2015-8876

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2016-05-22 · updated 2026-06-17

Description

Zend/zend_exceptions.c in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 does not validate certain Exception objects, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or trigger unintended method execution via crafted serialized data.

Affected products

• PHP: from 5.4.0 before 5.4.44; from 5.5.0 before 5.5.28; from 5.6.0 before 5.6.12 — fixed in 5.4.44, 5.5.28, 5.6.12

How to fix

Upgrade to a fixed version: PHP 5.4.44, 5.5.28, 5.6.12. Check the vendor advisory for mitigations.

References

• http://rhn.redhat.com/errata/RHSA-2016-2750.html
• http://www.php.net/ChangeLog-5.php
• https://bugs.php.net/bug.php?id=70121
• http://rhn.redhat.com/errata/RHSA-2016-2750.html
• http://www.php.net/ChangeLog-5.php
• https://bugs.php.net/bug.php?id=70121

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