CVE-2021-27165
An issue was discovered on FiberHome HG6245D devices through RP2613. The telnet daemon on port 23...
An issue was discovered on FiberHome HG6245D devices through RP2613. The telnet daemon on port 23/tcp can be abused with the gpon/gpon credentials.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered on FiberHome HG6245D devices through RP2613. The telnet daemon on port 23/tcp can be abused with the gpon/gpon credentials.
- Record
CVE-2021-27165- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-798
- Updated
- 2026-11-02
CVE List No score
An issue was discovered on FiberHome HG6245D devices through RP2613. The telnet daemon on port 23/tcp can be abused with the gpon/gpon credentials.
- Record
CVE-2021-27165- Updated
- 2026-11-02
EUVDEUVD-2021-13932 No score
An issue was discovered on FiberHome HG6245D devices through RP2613. The telnet daemon on port 23/tcp can be abused with the gpon/gpon credentials.
- Record
EUVD-2021-13932- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f89f-668c-hrhg No score
An issue was discovered on FiberHome HG6245D devices through RP2613. The telnet daemon on port 23...
An issue was discovered on FiberHome HG6245D devices through RP2613. The telnet daemon on port 23/tcp can be abused with the gpon/gpon credentials.
- Record
GHSA-f89f-668c-hrhg- Weakness
- CWE-798
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-27165 is a critical vulnerability (CVSS 9.8) in Fiberhome Hg6245d Firmware, published February 10, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 20.1%, the 97th percentile. No source names a fixed version.