{"cve":"CVE-2009-4242","nvd":{"published":"2010-01-25T19:30:01.090","modified":"2026-06-16T23:13:18.750","status":"Modified","description":"Heap-based buffer overflow in the CGIFCodec::GetPacketBuffer function in datatype/image/gif/common/gifcodec.cpp in RealNetworks RealPlayer 10; RealPlayer 10.5 6.0.12.1040 through 6.0.12.1741; RealPlayer 11 11.0.0 through 11.0.4; RealPlayer Enterprise; Mac RealPlayer 10, 10.1, and 11.0; Linux RealPlayer 10; and Helix Player 10.x allows remote attackers to execute arbitrary code via a GIF file with crafted chunk sizes that trigger improper memory allocation.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-119"],"references":["http://lists.helixcommunity.org/pipermail/datatype-cvs/2008-September/008633.html","http://osvdb.org/61966","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-2009-4242","score":0.08453,"percentile":0.95011,"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."]}