CVE-2021-27177

CRITICAL 9.8CVE-2021-27177 · Published 10/02/2021 · updated 17/06/2026

In short

CVE-2021-27177 is a CRITICAL (CVSS 9.8) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 19.7%, higher than 97.4% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Description

An issue was discovered on FiberHome HG6245D devices through RP2613. It is possible to bypass authentication by sending the decoded value of the GgpoZWxwCmxpc3QKd2hvCg== string to the telnet server.

References

pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html · Exploit

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