What is CVE-2019-15066?

CVE-2019-15066 is a critical-severity vulnerability in Hinet Gpon. CVSS score: 10.0/10. Published 2019-10-17.

How severe is CVE-2019-15066?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Vulnerability in Hinet Gpon

CVE-2019-15066

An “invalid command” handler issue was discovered in HiNet GPON firmware < I040GWR190731. It allows an attacker to execute arbitrary command through port 6998. CVSS 3.0 Base score 10.0. CVSS vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

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

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.016 (75.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Hinet Gpon — versions firmware < I040GWR190731
Hinet Gpon Firmware

References

www.twcert.org.tw/en/cp-128-3017-fd6bc-2.html (Third Party Advisory)
tvn.twcert.org.tw/taiwanvn/TVN-201908012 (Third Party Advisory)

Frequently asked questions

What is CVE-2019-15066?: CVE-2019-15066 is a critical-severity vulnerability in Hinet Gpon. CVSS score: 10.0/10. Published 2019-10-17.
How severe is CVE-2019-15066?: Critical severity. CVSS v3 base score is 10.0 out of 10.