How severe is CVE-2018-9249?

CVE-2018-9249 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-9249 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-9249?

CVE-2018-9249 affects Fiberhome Vdsl2 Modem Hg 150-ub Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-9249?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-9249 published?

CVE-2018-9249 was published on 2018-04-04 and last updated on 2026-06-17.

CVE-2018-9249

CVE-2018-9249 is a critical-severity vulnerability in Fiberhome Vdsl2 Modem Hg 150-ub Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Fiberhome Vdsl2 Modem Hg 150-ub Firmware
Published: 2018-04-04
Last modified: 2026-06-17

Description

FiberHome VDSL2 Modem HG 150-UB devices allow authentication bypass by ignoring the parent.location='login.html' JavaScript code in the response to an unauthenticated request.

Frequently asked questions

What is CVE-2018-9249?: FiberHome VDSL2 Modem HG 150-UB devices allow authentication bypass by ignoring the parent.location='login.html' JavaScript code in the response to an unauthenticated request.
How severe is CVE-2018-9249?: CVE-2018-9249 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-9249 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-9249?: CVE-2018-9249 affects Fiberhome Vdsl2 Modem Hg 150-ub Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-9249?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-9249 published?: CVE-2018-9249 was published on 2018-04-04 and last updated on 2026-06-17.

References

https://gist.github.com/pak0s/cd7ac9c2ee659138816f92693d2df602

Affected products (1)

cpe:2.3:o:fiberhome:vdsl2_modem_hg_150-ub_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Fiberhome Vdsl2 Modem Hg 150-ub Firmware

CVE-2018-9248 — Critical (CVSS 9.8): FiberHome VDSL2 Modem HG 150-UB devices allow authentication bypass via a "Cookie: Name=0admin" header.

All CVEs affecting Fiberhome Vdsl2 Modem Hg 150-ub Firmware →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-101077 — Critical (CVSS 10.0): A flaw has been found in Netcore NR289-GE 1.4.5102. This impacts the function process_request of the component boa_temp…
CVE-2026-100886 — Critical (CVSS 10.0): A vulnerability was identified in Seetong T8108, T8108P, T8116 and T8232 4.6.1.4-build202604241011. The affected…
CVE-2026-77244 — Critical (CVSS 10.0): MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0,…
CVE-2026-94493 — Critical (CVSS 10.0): A vulnerability was detected in Gigatech PDV5701 1.0.31_240305_112640. This issue affects some unknown processing of…
CVE-2026-83099 — Critical (CVSS 10.0): Vulnerability in the Oracle Forms product of Oracle Fusion Middleware (component: Forms Services, C/S, Charmode).…
CVE-2026-83059 — Critical (CVSS 10.0): Vulnerability in the Oracle Internet Directory product of Oracle Fusion Middleware (component: OID LDAP Server).…

Browse all CWE-287 (Improper Authentication) vulnerabilities →