{"cve":"CVE-2017-6441","nvd":{"published":"2017-04-03T05:59:00.910","modified":"2026-06-17T01:22:21.270","status":"Modified","description":"The _zval_get_long_func_ex in Zend/zend_operators.c in PHP 7.1.2 allows attackers to cause a denial of service (NULL pointer dereference and application crash) via crafted use of \"declare(ticks=\" in a PHP script. NOTE: the vendor disputes the classification of this as a vulnerability, stating \"Please do not request CVEs for ordinary bugs. CVEs are relevant for security issues only.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-476"],"references":["https://bugs.php.net/bug.php?id=74146","https://github.com/php/php-src/pull/2396","https://bugs.php.net/bug.php?id=74146","https://github.com/php/php-src/pull/2396"],"products":["php:php"],"source":"nvd","synced_at":"2026-10-19T20:42:09.859288039+00:00"},"epss":{"cve":"CVE-2017-6441","score":0.01832,"percentile":0.78895,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}