CVE-2025-63353 — CRITICAL (9.8)

Vulnerability Description

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 derives the router passphrase from the SSID, enabling an attacker who can observe the SSID to predict the default password without authentication or user interaction.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Fiberhome	Hg6145F1 Firmware	rp4423
Fiberhome	Hg6145F1	-

Related Weaknesses (CWE)

CWE-284

References

https://github.com/hanianis/CVE-2025-63353Third Party Advisory
https://medium.com/@hanianis.bouzid/fiberhome-gpon-onu-model-hg6145f1-router-preExploitThird Party Advisory

FAQ

What is CVE-2025-63353?

CVE-2025-63353 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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...

How severe is CVE-2025-63353?

CVE-2025-63353 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-63353?

Check the references section above for vendor advisories and patch information. Affected products include: Fiberhome Hg6145F1 Firmware, Fiberhome Hg6145F1.