{"cve":{"cve_id":"CVE-2009-4242","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.08453,"epss_percentile":0.94304,"epss_as_of":"2026-06-23","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.","published_at":"2010-01-25T19:00:00Z","last_modified_at":"2026-06-16T23:13:18.750000Z","cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-119"],"nvd_references":["http://www.redhat.com/support/errata/RHSA-2010-0094.html","http://www.vupen.com/english/advisories/2010/0178","https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10144","https://exchange.xforce.ibmcloud.com/vulnerabilities/55795","http://securitytracker.com/id?1023489","https://bugzilla.redhat.com/show_bug.cgi?id=561436","http://lists.helixcommunity.org/pipermail/datatype-cvs/2008-September/008633.html","http://service.real.com/realplayer/security/01192010_player/en/","http://secunia.com/advisories/38450","http://www.zerodayinitiative.com/advisories/ZDI-10-006/","http://osvdb.org/61966","http://secunia.com/advisories/38218","https://helixcommunity.org/viewcvs/datatype/image/gif/common/gifcodec.cpp?view=log#rev1.8","http://www.securityfocus.com/archive/1/509096/100/0/threaded","http://www.securityfocus.com/bid/37880"],"vuln_status":"Modified","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:05:14.531034Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"realnetworks","vendor_name":"RealNetworks","product_slug":"helix-player","product_name":"helix_player","version_start":"11.0.0","version_start_inclusive":true,"version_end":"11.0.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:realnetworks:helix_player:11.0.0:*:*:*:*:*:*:*"},{"vendor_slug":"realnetworks","vendor_name":"RealNetworks","product_slug":"helix-player","product_name":"helix_player","version_start":"10.0","version_start_inclusive":true,"version_end":"10.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:realnetworks:helix_player:10.0:*:*:*:*:*:*:*"},{"vendor_slug":"realnetworks","vendor_name":"RealNetworks","product_slug":"helix-player","product_name":"helix_player","version_start":"11.0.1","version_start_inclusive":true,"version_end":"11.0.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:realnetworks:helix_player:11.0.1:*:*:*:*:*:*:*"},{"vendor_slug":"realnetworks","vendor_name":"RealNetworks","product_slug":"realplayer","product_name":"realplayer","version_start":"11.0.1","version_start_inclusive":true,"version_end":"11.0.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:realnetworks:realplayer:11.0.1:*:*:*:*:*:*:*"},{"vendor_slug":"realnetworks","vendor_name":"RealNetworks","product_slug":"realplayer","product_name":"realplayer","version_start":"11.0.2","version_start_inclusive":true,"version_end":"11.0.2","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:realnetworks:realplayer:11.0.2:*:*:*:*:*:*:*"},{"vendor_slug":"realnetworks","vendor_name":"RealNetworks","product_slug":"realplayer","product_name":"realplayer","version_start":"11.0.3","version_start_inclusive":true,"version_end":"11.0.3","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:realnetworks:realplayer:11.0.3:*:*:*:*:*:*:*"},{"vendor_slug":"realnetworks","vendor_name":"RealNetworks","product_slug":"realplayer","product_name":"realplayer","version_start":"11.0.4","version_start_inclusive":true,"version_end":"11.0.4","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:realnetworks:realplayer:11.0.4:*:*:*:*:*:*:*"},{"vendor_slug":"realnetworks","vendor_name":"RealNetworks","product_slug":"realplayer","product_name":"realplayer","version_start":"11.0.5","version_start_inclusive":true,"version_end":"11.0.5","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:realnetworks:realplayer:11.0.5:*:*:*:*:*:*:*"},{"vendor_slug":"realnetworks","vendor_name":"RealNetworks","product_slug":"realplayer","product_name":"realplayer","version_start":"10.1","version_start_inclusive":true,"version_end":"10.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:realnetworks:realplayer:10.1:*:*:*:*:*:*:*"},{"vendor_slug":"realnetworks","vendor_name":"RealNetworks","product_slug":"realplayer","product_name":"realplayer","version_start":"10.0","version_start_inclusive":true,"version_end":"10.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:realnetworks:realplayer:10.0:*:*:*:*:*:*:*"},{"vendor_slug":"realnetworks","vendor_name":"RealNetworks","product_slug":"realplayer","product_name":"realplayer","version_start":"10.5","version_start_inclusive":true,"version_end":"10.5","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:realnetworks:realplayer:10.5:*:*:*:*:*:*: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