{"cve":"CVE-2006-4020","nvd":{"published":"2006-08-08T20:04:00.000","modified":"2026-06-16T22:28:16.530","status":"Modified","description":"scanf.c in PHP 5.1.4 and earlier, and 4.4.3 and earlier, allows context-dependent attackers to execute arbitrary code via a sscanf PHP function call that performs argument swapping, which increments an index past the end of an array and triggers a buffer over-read.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["ftp://patches.sgi.com/support/free/security/advisories/20061001-01-P.asc","http://bugs.php.net/bug.php?id=38322","http://rhn.redhat.com/errata/RHSA-2006-0688.html","http://rhn.redhat.com/errata/RHSA-2006-0736.html","http://secunia.com/advisories/21403"],"products":["php:php"],"source":"nvd","synced_at":"2026-10-19T19:42:44.451428143+00:00"},"epss":{"cve":"CVE-2006-4020","score":0.02011,"percentile":0.80873,"date":"2026-10-31"},"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."]}