{"cve":"CVE-2019-1683","nvd":{"published":"2019-02-25T17:29:00.280","modified":"2026-06-17T02:29:02.230","status":"Modified","description":"A vulnerability in the certificate handling component of the Cisco SPA112, SPA525, and SPA5X5 Series IP Phones could allow an unauthenticated, remote attacker to listen to or control some aspects of a Transport Level Security (TLS)-encrypted Session Initiation Protocol (SIP) conversation. The vulnerability is due to the improper validation of server certificates. An attacker could exploit this vulnerability by crafting a malicious server certificate to present to the client. An exploit could allow an attacker to eavesdrop on TLS-encrypted traffic and potentially route or redirect calls initiated by an affected device. Affected software include version 7.6.2 of the Cisco Small Business SPA525 Series IP Phones and Cisco Small Business SPA5X5 Series IP Phones and version 1.4.2 of the Cisco Small Business SPA500 Series IP Phones and Cisco Small Business SPA112 Series IP Phones.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","score":7.4},"cwes":["CWE-295"],"references":["http://www.securityfocus.com/bid/107111","https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190220-ipphone-certs","http://www.securityfocus.com/bid/107111","https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190220-ipphone-certs"],"products":["cisco:spa112_firmware","cisco:spa500_firmware","cisco:spa500ds_firmware","cisco:spa500s_firmware","cisco:spa501g_firmware","cisco:spa502g_firmware","cisco:spa504g_firmware","cisco:spa508g_firmware","cisco:spa509g_firmware","cisco:spa512g_firmware","cisco:spa514g_firmware","cisco:spa525_firmware","cisco:spa525g_firmware","cisco:spa5x5_firmware"],"source":"nvd","synced_at":"2026-10-19T20:54:46.948512734+00:00"},"epss":{"cve":"CVE-2019-1683","score":0.00874,"percentile":0.58961,"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."]}