What’s Vulnerable › Vulnerabilities

CVE-2015-8878

• Severity: medium (CVSS 5.9 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-05-22 · updated 2026-06-17
• Weakness: CWE-119

Description

main/php_open_temporary_file.c in PHP before 5.5.28 and 5.6.x before 5.6.12 does not ensure thread safety, which allows remote attackers to cause a denial of service (race condition and heap memory corruption) by leveraging an application that performs many temporary-file accesses.

Affected products

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

How to fix

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

References

• http://www.php.net/ChangeLog-5.php
• https://bugs.php.net/bug.php?id=70002
• http://www.php.net/ChangeLog-5.php
• https://bugs.php.net/bug.php?id=70002

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