{"cve":"CVE-2019-18863","nvd":{"published":"2020-03-02T18:15:10.667","modified":"2026-06-17T02:25:29.563","status":"Modified","description":"A key length vulnerability in the implementation of the SRTP 128-bit key on Mitel 6800 and 6900 SIP series phones, versions 5.1.0.2051 SP2 and earlier, could allow an attacker to launch a man-in-the-middle attack when SRTP is used in a call. A successful exploit may allow the attacker to intercept sensitive information.","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:N/A:N","score":5.9},"cwes":["CWE-326"],"references":["https://www.mitel.com/support/security-advisories","https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-19-0006","https://www.mitel.com/support/security-advisories","https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-19-0006"],"products":["mitel:6863i_firmware","mitel:6865i_firmware","mitel:6867i_firmware","mitel:6869i_firmware","mitel:6873i_firmware","mitel:6920_firmware","mitel:6930_firmware","mitel:6940_firmware"],"source":"nvd","synced_at":"2026-10-19T21:02:53.949909883+00:00"},"epss":{"cve":"CVE-2019-18863","score":0.00513,"percentile":0.4376,"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."]}