CVE-2021-27171
9.8
CRITICAL · CVSS 3.1 · EPSS 17.8% (pctl 97)
Patch early
EPSS 17.8% — above the 10% action threshold.
Description
An issue was discovered on FiberHome HG6245D devices through RP2613. It is possible to start a Linux telnetd as root on port 26/tcp by using the CLI interface commands of ddd and shell (or tshell).
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 17.84% — more likely to be exploited than 97% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2021-02-10 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| fiberhome | hg6245d |
| fiberhome | hg6245d firmware |
References
→ the Explorer · watch your stack · NVD