{"id":"CVE-2008-5911","aliases":["EUVD-2008-5881","GHSA-gfhg-4w55-8q3g"],"status":"published","title":"Multiple buffer overflows in RealNetworks Helix Server and Helix Mobile Server 11.x before 11.1.8...","description":"Multiple buffer overflows in RealNetworks Helix Server and Helix Mobile Server 11.x before 11.1.8 and 12.x before 12.0.1 allow remote attackers to (1) cause a denial of service via three crafted RTSP SETUP commands, or execute arbitrary code via (2) an NTLM authentication request with malformed base64-encoded data, (3) an RTSP DESCRIBE command, or (4) a DataConvertBuffer request.","severity":{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.06185,"percentile":0.93546,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2009-01-20T15:26:00Z","modified":"2026-06-16T23:01:12Z","products":[{"vendor":"realnetworks","product":"helix_server"},{"vendor":"realnetworks","product":"helix_server_mobile"}],"references":[{"url":"http://www.securitytracker.com/id?1021500","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.securitytracker.com/id?1021498","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://secunia.com/advisories/33360","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://docs.real.com/docs/security/SecurityUpdate121508HS.pdf","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://www.vupen.com/english/advisories/2008/3521","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"http://www.securitytracker.com/id?1021501","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.securitytracker.com/id?1021499","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2008-5911"},{"url":"https://github.com/advisories/GHSA-gfhg-4w55-8q3g"}],"sources":{"cve":[{"id":"CVE-2008-5911","description":"Multiple buffer overflows in RealNetworks Helix Server and Helix Mobile Server 11.x before 11.1.8 and 12.x before 12.0.1 allow remote attackers to (1) cause a denial of service via three crafted RTSP SETUP commands, or execute arbitrary code via (2) an NTLM authentication request with malformed base64-encoded data, (3) an RTSP DESCRIBE command, or (4) a DataConvertBuffer request.","status":"published","published":"2009-01-20T15:26:00Z","modified":"2024-08-07T11:13:13.174Z","updated_at":"2026-11-02T14:34:44.297409Z"}],"euvd":[{"id":"EUVD-2008-5881","description":"Multiple buffer overflows in RealNetworks Helix Server and Helix Mobile Server 11.x before 11.1.8 and 12.x before 12.0.1 allow remote attackers to (1) cause a denial of service via three crafted RTSP SETUP commands, or execute arbitrary code via (2) an NTLM authentication request with malformed base64-encoded data, (3) an RTSP DESCRIBE command, or (4) a DataConvertBuffer request.","status":"published","published":"2009-01-20T15:26:00Z","modified":"2024-08-07T11:13:13Z","updated_at":"2026-11-03T01:38:41.285261Z"}],"ghsa":[{"id":"GHSA-gfhg-4w55-8q3g","title":"Multiple buffer overflows in RealNetworks Helix Server and Helix Mobile Server 11.x before 11.1.8...","description":"Multiple buffer overflows in RealNetworks Helix Server and Helix Mobile Server 11.x before 11.1.8 and 12.x before 12.0.1 allow remote attackers to (1) cause a denial of service via three crafted RTSP SETUP commands, or execute arbitrary code via (2) an NTLM authentication request with malformed base64-encoded data, (3) an RTSP DESCRIBE command, or (4) a DataConvertBuffer request.","status":"published","published":"2022-05-17T05:42:58Z","modified":"2023-01-28T05:04:36Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:44:12.284845Z"}],"nvd":[{"id":"CVE-2008-5911","description":"Multiple buffer overflows in RealNetworks Helix Server and Helix Mobile Server 11.x before 11.1.8 and 12.x before 12.0.1 allow remote attackers to (1) cause a denial of service via three crafted RTSP SETUP commands, or execute arbitrary code via (2) an NTLM authentication request with malformed base64-encoded data, (3) an RTSP DESCRIBE command, or (4) a DataConvertBuffer request.","status":"published","published":"2009-01-20T16:00:00.203Z","modified":"2026-06-16T23:01:12.69Z","cvss":[{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:01:31.111729Z"}]}}