CVE-2019-14657
moderate-risk
Published 2019-10-08
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.
Do I need to act?
~
1.8% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10
High
NETWORK
/ LOW complexity
Affected Products (3)
Vp59 Firmware
T49G Firmware
T58V Firmware
Affected Vendors
References (4)
44
/ 100
moderate-risk
Severity
30/34 · Critical
Exploitability
5/34 · Minimal
Exposure
9/34 · Low