How severe is CVE-2019-17186?

CVE-2019-17186 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-17186 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-17186?

CVE-2019-17186 affects Fiberhome Hg2201t Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-17186?

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

When was CVE-2019-17186 published?

CVE-2019-17186 was published on 2019-10-08 and last updated on 2026-06-17.

CVE-2019-17186

CVE-2019-17186 is a high-severity vulnerability in Fiberhome Hg2201t Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Fiberhome Hg2201t Firmware
Published: 2019-10-08
Last modified: 2026-06-17

Description

/var/WEB-GUI/cgi-bin/telnet.cgi on FiberHome HG2201T 1.00.M5007_JS_201804 devices allows pre-authentication remote code execution.

Frequently asked questions

What is CVE-2019-17186?: /var/WEB-GUI/cgi-bin/telnet.cgi on FiberHome HG2201T 1.00.M5007_JS_201804 devices allows pre-authentication remote code execution.
How severe is CVE-2019-17186?: CVE-2019-17186 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-17186 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-17186?: CVE-2019-17186 affects Fiberhome Hg2201t Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-17186?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-17186 published?: CVE-2019-17186 was published on 2019-10-08 and last updated on 2026-06-17.

References

https://gist.github.com/ztz472947849/d62e7b6f4831b55c338ef22432eca06d

Affected products (1)

cpe:2.3:o:fiberhome:hg2201t_firmware:hg2201t_1.00.m5007_js_201804:*:*:*:*:*:*:*

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