{"id":"CVE-2006-4812","aliases":["EUVD-2006-4799","GHSA-2g5f-835h-7qjr","RHSA-2006:0688","RHSA-2006:0708"],"status":"published","title":"Integer overflow in PHP 5 up to 5.1.6 and 4 before 4.3.0 allows remote attackers to execute...","description":"Integer overflow in PHP 5 up to 5.1.6 and 4 before 4.3.0 allows remote attackers to execute arbitrary code via an argument to the unserialize PHP function with a large value for the number of array elements, which triggers the overflow in the Zend Engine ecalloc function (Zend/zend_alloc.c).","severity":{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.20734,"percentile":0.97551,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-94"],"published":"2006-10-09T18:00:00Z","modified":"2026-06-29T10:01:27Z","exploits":[{"source":"exploitdb","id":"EDB-28760","title":"PHP 3 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4.3.0 allows remote attackers to execute...","description":"Integer overflow in PHP 5 up to 5.1.6 and 4 before 4.3.0 allows remote attackers to execute arbitrary code via an argument to the unserialize PHP function with a large value for the number of array elements, which triggers the overflow in the Zend Engine ecalloc function (Zend/zend_alloc.c).","status":"published","published":"2022-05-01T07:22:09Z","modified":"2023-01-31T05:02:06Z","cwes":["CWE-94"],"updated_at":"2026-11-02T14:48:11.509294Z"}],"nvd":[{"id":"CVE-2006-4812","description":"Integer overflow in PHP 5 up to 5.1.6 and 4 before 4.3.0 allows remote attackers to execute arbitrary code via an argument to the unserialize PHP function with a large value for the number of array elements, which triggers the overflow in the Zend Engine ecalloc function (Zend/zend_alloc.c).","status":"published","published":"2006-10-10T04:06:00Z","modified":"2026-06-16T22:29:50.57Z","cvss":[{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:01:06.675668Z"}],"osv":[{"id":"RHSA-2006:0688","title":"Red Hat Security Advisory: php security update","status":"published","published":"2024-09-15T16:25:05Z","modified":"2026-06-29T10:01:27Z","updated_at":"2026-11-02T15:52:59.135214Z"},{"id":"RHSA-2006:0708","title":"Red Hat Security Advisory: php security update","status":"published","published":"2024-09-15T16:25:08Z","modified":"2026-06-26T10:05:11Z","updated_at":"2026-11-02T15:52:59.135214Z"}]}}