VULNERABILITY INTELLIGENCE

CVE-2019-14657

CVSS score8.8 HIGH
EPSS probability3.74%
CISA KEVNot currently listed
Published2019-10-08
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • nvd@nist.gov: CWE-22

Primary references