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 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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.013 (68.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Fiberhome Hg6145f1
- Fiberhome Hg6145f1 Firmware — versions rp4423
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/hanianis/CVE-2025-63353 (Third Party Advisory)
- medium.com/@hanianis.bouzid/fiberhome-gpon-onu-model-hg6145f1-router-predictabl… (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?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.