{"cve":"CVE-2017-6630","nvd":{"published":"2017-05-22T01:29:00.180","modified":"2026-06-17T01:22:41.190","status":"Modified","description":"A vulnerability in the Session Initiation Protocol (SIP) implementation of Cisco IP Phone 8851 11.0(0.1) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to an abnormal SIP message. An attacker could exploit this vulnerability by manipulating the CANCEL packet. An exploit could allow the attacker to cause a disruption of service to the phone. Cisco Bug IDs: CSCvc34795.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-399"],"references":["http://www.securityfocus.com/bid/98533","http://www.securitytracker.com/id/1038511","https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170517-sip","http://www.securityfocus.com/bid/98533","http://www.securitytracker.com/id/1038511"],"products":["cisco:ip_phone_8800_series_firmware"],"source":"nvd","synced_at":"2026-10-19T20:42:36.429588156+00:00"},"epss":{"cve":"CVE-2017-6630","score":0.02373,"percentile":0.83849,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}