{"id":"CVE-2019-14657","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-14657","generatedAt":"2026-10-28T23:58:08.285Z","title":"They execute tar as root to extract files, but do not validate the extraction directory.","description":"Yealink phones through 2019-08-04 have an issue with OpenVPN file upload. They execute tar as root to extract files, but do not validate the extraction directory. Creating a tar file with ../../../../ allows replacement of almost any file on a phone. This leads to password replacement and arbitrary code execution as root.","published":"2019-10-08T13:15:15.000Z","lastModified":"2026-06-17T02:18:46.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-22","CWE-434"],"affected":["yeahlink/vp59 firmware","yeahlink/t49g firmware","yeahlink/t58v firmware"],"epss":{"score":0.03735,"percentile":0.89776,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (3.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://cerebusforensics.com/yealink/exploit.html","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://sway.office.com/3pCb559LYVuT0eig","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://cerebusforensics.com/yealink/exploit.html","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://sway.office.com/3pCb559LYVuT0eig","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-14657","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}