{"cve":{"cve_id":"CVE-2007-5639","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":0.0179,"epss_percentile":0.755,"epss_as_of":"2026-06-23","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.","published_at":"2007-10-23T17:00:00Z","last_modified_at":"2026-06-16T22:46:32.987000Z","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":null,"nvd_references":["http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt","http://securityreason.com/securityalert/3273","http://www.securityfocus.com/archive/1/482480/100/0/threaded","http://www.securityfocus.com/bid/26122","https://exchange.xforce.ibmcloud.com/vulnerabilities/37253","http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=654715"],"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":"2026-06-28T23:04:13.501280Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"nortel","vendor_name":"nortel","product_slug":"ip-softphone-2050","product_name":"ip_softphone_2050","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:nortel:ip_softphone_2050:*:*:*:*:*:*:*:*"},{"vendor_slug":"nortel","vendor_name":"nortel","product_slug":"mobile-voice-client-2050","product_name":"mobile_voice_client_2050","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:nortel:mobile_voice_client_2050:*:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt","source_type":"MISC","tags":[]},{"url":"http://securityreason.com/securityalert/3273","source_type":"MISC","tags":[]},{"url":"http://www.securityfocus.com/archive/1/482480/100/0/threaded","source_type":"MISC","tags":[]},{"url":"http://www.securityfocus.com/bid/26122","source_type":"MISC","tags":[]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/37253","source_type":"MISC","tags":[]},{"url":"http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=654715","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2007-10-23T17:00:00Z","label":"CVE published","source":null}]}