{"id":"CVE-2011-0753","aliases":["EUVD-2011-0765","GHSA-qmj6-6gg3-prp7"],"status":"published","title":"Race condition in the PCNTL extension in PHP before 5.3.4, when a user-defined signal handler...","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.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.008,"percentile":0.56841,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-362"],"published":"2011-02-02T21:00:00Z","modified":"2026-06-16T23:28:00Z","products":[{"vendor":"php","product":"php"}],"references":[{"url":"http://bugs.php.net/52784","tags":["x_refsource_CONFIRM","x_transferred","Patch"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/65431","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12271","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://www.php.net/ChangeLog-5.php","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-0753"},{"url":"https://github.com/advisories/GHSA-qmj6-6gg3-prp7"}],"sources":{"cve":[{"id":"CVE-2011-0753","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.","status":"published","published":"2011-02-02T21:00:00Z","modified":"2024-08-06T22:05:53.445Z","updated_at":"2026-11-02T14:35:39.079595Z"}],"euvd":[{"id":"EUVD-2011-0765","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.","status":"published","published":"2011-02-02T21:00:00Z","modified":"2024-08-06T22:05:53Z","updated_at":"2026-11-03T01:55:59.230529Z"}],"ghsa":[{"id":"GHSA-qmj6-6gg3-prp7","title":"Race condition in the PCNTL extension in PHP before 5.3.4, when a user-defined signal handler...","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.","status":"published","published":"2022-05-14T02:16:08Z","modified":"2023-02-02T05:05:29Z","cwes":["CWE-362"],"updated_at":"2026-11-02T14:52:07.660157Z"}],"nvd":[{"id":"CVE-2011-0753","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.","status":"published","published":"2011-02-02T22:00:02.05Z","modified":"2026-06-16T23:28:00.353Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T14:02:06.042049Z"}]}}