What is CVE-2025-63353?

CVE-2025-63353 is a critical-severity vulnerability in Fiberhome Hg6145f1, classified under Improper Access Control. CVSS score: 9.8/10. Published 2025-11-12.

How severe is CVE-2025-63353?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-63353 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Fiberhome Hg6145f1

CVE-2025-63353

A vulnerability in FiberHome GPON ONU HG6145F1 RP4423 allows the device's factory default Wi-Fi password (WPA/WPA2 pre-shared key) to be predicted from the SSID. The device generates default passwords using a deterministic algorithm that d…

EPSS: 0.012 (63.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Fiberhome Hg6145f1
Fiberhome Hg6145f1_firmware — versions rp4423
N/a — versions n/a

Weakness classification (CWE)

CWE-284 — Improper Access Control

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-63353?: CVE-2025-63353 is a critical-severity vulnerability in Fiberhome Hg6145f1, classified under Improper Access Control. CVSS score: 9.8/10. Published 2025-11-12.
How severe is CVE-2025-63353?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-63353 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.