{"cve":"CVE-2009-2534","nvd":{"published":"2009-07-20T17:30:57.297","modified":"2026-06-16T23:09:39.230","status":"Modified","description":"RealNetworks Helix Server and Helix Mobile Server before 13.0.0 allow remote attackers to cause a denial of service (daemon crash) via an RTSP SETUP request that (1) specifies the / URI or (2) lacks a / character in the URI.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://docs.real.com/docs/security/SecurityUpdate071409HS.pdf","http://osvdb.org/55982","http://www.coresecurity.com/content/real-helix-dna","http://www.exploit-db.com/exploits/9198","http://www.securityfocus.com/archive/1/505083/100/0/threaded"],"products":["realnetworks:helix_server","realnetworks:helix_server_mobile"],"source":"nvd","synced_at":"2026-10-19T19:54:07.895733559+00:00"},"epss":{"cve":"CVE-2009-2534","score":0.08827,"percentile":0.95192,"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."]}