{"cve":{"cve_id":"CVE-2007-5591","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":0.02292,"epss_percentile":0.80986,"epss_as_of":"2026-06-23","description":"The CS1000 signaling server in Nortel Enterprise VoIP-Core-CS 1000M Chassis/Cabinet, Enterprise VoIP-Core-CS 1000E and 1000S, Meridian-Core-Option 11C Chassis and Cabinet, and Meridian-Core-Option 51C, 61C, and 81C allows remote attackers to cause a denial of service (telephony application outage) via a flood of packets to Embedded LAN (ELAN) ports.","published_at":"2007-10-19T23:00:00Z","last_modified_at":"2026-06-16T22:46:27.427000Z","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://secunia.com/advisories/27282","http://www.vupen.com/english/advisories/2007/3536","https://exchange.xforce.ibmcloud.com/vulnerabilities/37252","http://osvdb.org/41799","http://www.csnc.ch/static/advisory/csnc/nortel_telephony_server_denial_of_service_v1.0.txt","http://www116.nortel.com/pub/repository/CLARIFY/DOCUMENT/2007/42/022871-01.pdf","http://www.securityfocus.com/bid/26113","http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=655204","http://www.securityfocus.com/archive/1/482484/100/0/threaded"],"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":"meridian-option-11c","product_name":"meridian_option_11c","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:nortel:meridian_option_11c:*:*:*:*:*:*:*:*"},{"vendor_slug":"nortel","vendor_name":"nortel","product_slug":"meridian-option-51c","product_name":"meridian_option_51c","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:nortel:meridian_option_51c:*:*:*:*:*:*:*:*"},{"vendor_slug":"nortel","vendor_name":"nortel","product_slug":"meridian-option-61c","product_name":"meridian_option_61c","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:nortel:meridian_option_61c:*:*:*:*:*:*:*:*"},{"vendor_slug":"nortel","vendor_name":"nortel","product_slug":"meridian-option-81c","product_name":"meridian_option_81c","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:nortel:meridian_option_81c:*:*:*:*:*:*:*:*"},{"vendor_slug":"nortel","vendor_name":"nortel","product_slug":"voip-core-cs","product_name":"voip-core-cs","version_start":"1000e","version_start_inclusive":true,"version_end":"1000e","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:nortel:voip-core-cs:1000e:*:enterprise:*:*:*:*:*"},{"vendor_slug":"nortel","vendor_name":"nortel","product_slug":"voip-core-cs","product_name":"voip-core-cs","version_start":"1000m","version_start_inclusive":true,"version_end":"1000m","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:nortel:voip-core-cs:1000m:*:enterprise:*:*:*:*:*"},{"vendor_slug":"nortel","vendor_name":"nortel","product_slug":"voip-core-cs","product_name":"voip-core-cs","version_start":"1000s","version_start_inclusive":true,"version_end":"1000s","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:nortel:voip-core-cs:1000s:*:enterprise:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"http://secunia.com/advisories/27282","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"http://www.vupen.com/english/advisories/2007/3536","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/37252","source_type":"MISC","tags":[]},{"url":"http://osvdb.org/41799","source_type":"MISC","tags":[]},{"url":"http://www.csnc.ch/static/advisory/csnc/nortel_telephony_server_denial_of_service_v1.0.txt","source_type":"MISC","tags":[]},{"url":"http://www116.nortel.com/pub/repository/CLARIFY/DOCUMENT/2007/42/022871-01.pdf","source_type":"MISC","tags":[]},{"url":"http://www.securityfocus.com/bid/26113","source_type":"MISC","tags":[]},{"url":"http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=655204","source_type":"MISC","tags":[]},{"url":"http://www.securityfocus.com/archive/1/482484/100/0/threaded","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2007-10-19T23:00:00Z","label":"CVE 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