{"id":"CVE-2007-5639","aliases":["EUVD-2007-5611","GHSA-85f9-vx62-63wg"],"status":"published","title":"The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice...","description":"The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.","severity":{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.0179,"percentile":0.78493,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2007-10-23T17:00:00Z","modified":"2026-06-16T22:46:32Z","products":[{"vendor":"nortel","product":"ip_softphone_2050"},{"vendor":"nortel","product":"mobile_voice_client_2050"}],"references":[{"url":"http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"http://securityreason.com/securityalert/3273","tags":["third-party-advisory","x_refsource_SREASON","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/482480/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://www.securityfocus.com/bid/26122","tags":["vdb-entry","x_refsource_BID","x_transferred","Patch"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/37253","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL\u0026id=654715","tags":["x_refsource_CONFIRM","x_transferred","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2007-5639"},{"url":"https://github.com/advisories/GHSA-85f9-vx62-63wg"}],"sources":{"cve":[{"id":"CVE-2007-5639","description":"The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.","status":"published","published":"2007-10-23T17:00:00Z","modified":"2024-08-07T15:39:13.612Z","updated_at":"2026-11-02T13:32:00.617893Z"}],"euvd":[{"id":"EUVD-2007-5611","description":"The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.","status":"published","published":"2007-10-23T17:00:00Z","modified":"2024-08-07T15:39:13Z","updated_at":"2026-11-03T01:16:16.183984Z"}],"ghsa":[{"id":"GHSA-85f9-vx62-63wg","title":"The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice...","description":"The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.","status":"published","published":"2022-05-01T18:35:22Z","modified":"2023-01-31T05:04:50Z","updated_at":"2026-11-02T14:48:44.881102Z"}],"nvd":[{"id":"CVE-2007-5639","description":"The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.","status":"published","published":"2007-10-23T17:46:00Z","modified":"2026-06-16T22:46:32.987Z","cvss":[{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:01:22.203764Z"}]}}