CVE-2021-27170

critical

Description

An issue was discovered on FiberHome HG6245D devices through RP2613. By default, there are no firewall rules for IPv6 connectivity, exposing the internal management interfaces to the Internet.

References

https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#insecure-ipv6

Details

Source: Mitre, NVD

Published: 2021-02-10

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.15948