CVE-2019-14657

Name: CVE-2019-14657
Creator: NVD / NIST
Published: 2019-10-08T13:15:15.317+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 3.74%

Last modified Jun 17, 2026

CVE-2019-14657 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 3.74% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

3.74%

88.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Yeahlink	Vp59 Firmware	<= 2019-08-04
Yeahlink	T49g Firmware	<= 2019-08-04
Yeahlink	T58v Firmware	<= 2019-08-04

References

http://cerebusforensics.com/yealink/exploit.htmlExploit, Third Party Advisory
https://sway.office.com/3pCb559LYVuT0eigExploit, Third Party Advisory
http://cerebusforensics.com/yealink/exploit.htmlExploit, Third Party Advisory
https://sway.office.com/3pCb559LYVuT0eigExploit, Third Party Advisory

Timeline

Published: Oct 8, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-14657?

How severe is CVE-2019-14657?

CVE-2019-14657 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 3.74% probability of exploitation in the next 30 days.

How do I fix CVE-2019-14657?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-14657?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST