{"id":"CVE-2008-6564","aliases":["EUVD-2008-6527","GHSA-pv9m-5j84-gff3"],"status":"published","title":"Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses...","description":"Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses predictable sequence numbers, which allows remote attackers to hijack sessions via sniffing or brute force attacks.","severity":{"version":"2.0","score":7.6,"vector":"AV:N/AC:H/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02244,"percentile":0.82979,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2009-03-31T17:00:00Z","modified":"2026-06-16T23:02:27Z","products":[{"vendor":"nortel","product":"communication_server_1000"},{"vendor":"nortel","product":"unistim_protocol"}],"references":[{"url":"http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL\u0026id=713455","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/41801","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://osvdb.org/44379","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://secunia.com/advisories/29747","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"http://www.voipshield.com/research-details.php?id=27\u0026s=4\u0026threats_details=\u0026threats_category=0\u0026threats_vendor=0\u0026limit=20\u0026sort=discovered\u0026sortby=DESC","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.securityfocus.com/bid/28691","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.securitytracker.com/id?1019847","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2008-6564"},{"url":"https://github.com/advisories/GHSA-pv9m-5j84-gff3"}],"sources":{"cve":[{"id":"CVE-2008-6564","description":"Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses predictable sequence numbers, which allows remote attackers to hijack sessions via sniffing or brute force attacks.","status":"published","published":"2009-03-31T17:00:00Z","modified":"2024-08-07T11:34:47.068Z","updated_at":"2026-11-02T14:34:46.265542Z"}],"euvd":[{"id":"EUVD-2008-6527","description":"Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses predictable sequence numbers, which allows remote attackers to hijack sessions via sniffing or brute force attacks.","status":"published","published":"2009-03-31T17:00:00Z","modified":"2024-08-07T11:34:47Z","updated_at":"2026-11-03T01:38:35.880612Z"}],"ghsa":[{"id":"GHSA-pv9m-5j84-gff3","title":"Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses...","description":"Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses predictable sequence numbers, which allows remote attackers to hijack sessions via sniffing or brute force attacks.","status":"published","published":"2022-05-17T02:11:10Z","modified":"2023-01-27T05:03:30Z","updated_at":"2026-11-02T14:42:15.225524Z"}],"nvd":[{"id":"CVE-2008-6564","description":"Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses predictable sequence numbers, which allows remote attackers to hijack sessions via sniffing or brute force attacks.","status":"published","published":"2009-03-31T17:30:00.453Z","modified":"2026-06-16T23:02:27.887Z","cvss":[{"version":"2.0","score":7.6,"vector":"AV:N/AC:H/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:01:31.451035Z"}]}}