{"cve":"CVE-2019-1684","nvd":{"published":"2019-02-21T20:29:00.337","modified":"2026-06-17T02:29:02.393","status":"Modified","description":"A vulnerability in the Cisco Discovery Protocol or Link Layer Discovery Protocol (LLDP) implementation for the Cisco IP Phone 7800 and 8800 Series could allow an unauthenticated, adjacent attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. The vulnerability is due to missing length validation of certain Cisco Discovery Protocol or LLDP packet header fields. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol or LLDP packet to the targeted phone. A successful exploit could allow the attacker to cause the affected phone to reload unexpectedly, resulting in a temporary DoS condition. Versions prior to 12.6(1)MN80 are affected.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-119","CWE-399"],"references":["http://www.securityfocus.com/bid/107104","https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190220-cdp-lldp-dos","http://www.securityfocus.com/bid/107104","https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190220-cdp-lldp-dos"],"products":["cisco:ip_conference_phone_7832_firmware","cisco:ip_conference_phone_8832_firmware","cisco:ip_phone_7800_firmware","cisco:ip_phone_7811_firmware","cisco:ip_phone_7821_firmware","cisco:ip_phone_7841_firmware","cisco:ip_phone_7861_firmware","cisco:ip_phone_8800_firmware","cisco:ip_phone_8811_firmware","cisco:ip_phone_8841_firmware","cisco:ip_phone_8845_firmware","cisco:ip_phone_8851_firmware","cisco:ip_phone_8861_firmware","cisco:ip_phone_8865_firmware"],"source":"nvd","synced_at":"2026-10-19T20:54:46.948512734+00:00"},"epss":{"cve":"CVE-2019-1684","score":0.0064,"percentile":0.50667,"date":"2026-11-01"},"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."]}