{"cve":"CVE-2009-4247","nvd":{"published":"2010-01-25T19:30:01.510","modified":"2026-06-16T23:13:19.510","status":"Modified","description":"Stack-based buffer overflow in protocol/rtsp/rtspclnt.cpp in RealNetworks RealPlayer 10; RealPlayer 10.5 6.0.12.1040 through 6.0.12.1741; RealPlayer 11 11.0.x; RealPlayer SP 1.0.0 and 1.0.1; RealPlayer Enterprise; Mac RealPlayer 10, 10.1, 11.0, and 11.0.1; Linux RealPlayer 10, 11.0.0, and 11.0.1; and Helix Player 10.x, 11.0.0, and 11.0.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an ASM RuleBook with a large number of rules, related to an \"array overflow.\"","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-119"],"references":["http://lists.helixcommunity.org/pipermail/helix-client-dev/2009-August/008092.html","http://lists.helixcommunity.org/pipermail/protocol-cvs/2009-August/001943.html","http://secunia.com/advisories/38218","http://secunia.com/advisories/38450","http://securitytracker.com/id?1023489"],"products":["realnetworks:helix_player","realnetworks:realplayer","realnetworks:realplayer_enterprise","realnetworks:realplayer_sp"],"source":"nvd","synced_at":"2026-10-19T19:55:32.599380760+00:00"},"epss":{"cve":"CVE-2009-4247","score":0.0681,"percentile":0.94011,"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."]}