What’s Vulnerable › Vulnerabilities

CVE-2011-0753

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-02-02 · updated 2026-06-16
• Weakness: CWE-362

Description

Race condition in the PCNTL extension in PHP before 5.3.4, when a user-defined signal handler exists, might allow context-dependent attackers to cause a denial of service (memory corruption) via a large number of concurrent signals.

Affected products

• PHP: through 5.3.3; 1.0, 2.0, 2.0b10, 3.0, 3.0.1, 3.0.2 (+62)

References

• http://bugs.php.net/52784
• http://www.php.net/ChangeLog-5.php
• https://exchange.xforce.ibmcloud.com/vulnerabilities/65431
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12271
• http://bugs.php.net/52784
• http://www.php.net/ChangeLog-5.php
• https://exchange.xforce.ibmcloud.com/vulnerabilities/65431
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12271

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