How severe is CVE-2019-15066?

CVE-2019-15066 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-15066 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15066?

CVE-2019-15066 affects Hinet Gpon Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-15066?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-15066 published?

CVE-2019-15066 was published on 2019-10-17 and last updated on 2026-06-17.

CVE-2019-15066

CVE-2019-15066 is a critical-severity vulnerability in Hinet Gpon Firmware with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
CVSS v2: 10.0
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Hinet Gpon Firmware
Published: 2019-10-17
Last modified: 2026-06-17

Description

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).

Frequently asked questions

What is 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).
How severe is CVE-2019-15066?: CVE-2019-15066 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-15066 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15066?: CVE-2019-15066 affects Hinet Gpon Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-15066?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-15066 published?: CVE-2019-15066 was published on 2019-10-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:hinet:gpon_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Hinet Gpon Firmware

CVE-2019-13411 — Critical (CVSS 10.0): An “invalid command” handler issue was discovered in HiNet GPON firmware < I040GWR190731. It allows an attacker to…
CVE-2019-15064 — Critical (CVSS 9.8): HiNet GPON firmware version < I040GWR190731 allows an attacker login to device without any authentication.
CVE-2019-15065 — Critical (CVSS 9.3): A service which is hosted on port 6998 in HiNet GPON firmware < I040GWR190731 allows an attacker to execute a specific…
CVE-2019-13412 — Critical (CVSS 9.3): A service which is hosted on port 3097 in HiNet GPON firmware < I040GWR190731 allows an attacker to execute a specific…

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