What is CVE-2018-9248?

CVE-2018-9248 is a critical-severity vulnerability in Fiberhome Vdsl2 Modem Hg 150-Ub, classified under Improper Authentication. CVSS score: 9.8/10. Published 2018-04-04.

How severe is CVE-2018-9248?

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

Auth bypass in Fiberhome Vdsl2 Modem Hg 150-Ub

CVE-2018-9248

FiberHome VDSL2 Modem HG 150-UB devices allow authentication bypass via a "Cookie: Name=0admin" header.

Vulnerability class: Broken Authentication

Published 2018-04-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.145 (96.5th percentile), scored 2026-09-29.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.147 · newest: 0.145 · change: -0.003

Affected products

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

www.exploit-db.com/exploits/44413/ (VDB Entry, Third Party Advisory, exploit)
gist.github.com/pak0s/cd7ac9c2ee659138816f92693d2df602 (Third Party Advisory)

Frequently asked questions

What is CVE-2018-9248?: CVE-2018-9248 is a critical-severity vulnerability in Fiberhome Vdsl2 Modem Hg 150-Ub, classified under Improper Authentication. CVSS score: 9.8/10. Published 2018-04-04.
How severe is CVE-2018-9248?: Critical severity. CVSS v3 base score is 9.8 out of 10.