What is CVE-2019-14656?

CVE-2019-14656 is a high-severity vulnerability in Yeahlink T49g, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2019-10-08.

How severe is CVE-2019-14656?

High severity. CVSS v3 base score is 8.8 out of 10.

Arbitrary file upload in Yeahlink T49g

CVE-2019-14656

Yealink phones through 2019-08-04 do not properly check user roles in POST requests. Consequently, the default User account (with a password of user) can make admin requests via HTTP.

Vulnerability class: Unrestricted File Upload

Published 2019-10-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.020 (79.9th percentile), scored 2026-10-08.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

cerebusforensics.com/yealink/exploit.html (Exploit, Third Party Advisory)
sway.office.com/3pCb559LYVuT0eig (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-14656?: CVE-2019-14656 is a high-severity vulnerability in Yeahlink T49g, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2019-10-08.
How severe is CVE-2019-14656?: High severity. CVSS v3 base score is 8.8 out of 10.