01 Record

CVE-2017-18374

The ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 router distributed by TrueOnline has two user accounts with default passwords, including a hardcoded service account with the

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

The ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 router distributed by TrueOnline has two user accounts with default passwords, including a hardcoded service account with the

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 5.50% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 92.4% of scored records. A rank, not a probability.
NVD base score: 8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2019-05-02 16:15Z7 YR AGO

Last updated

2024-08-05 21:20Z2 YR AGO

Reserved

2019-05-02

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-798Use of Hard-coded CredentialsBase

Data version

5.1

Document digest

e2bd62b0b53a5ac40dc115181f397f52967ba78d1fcf071c0681a476c5884ecf

05 Affected products

VendorProductVersionsPlatforms

billion5200w-tNot specified—

billion5200w-t_firmwareNot specified—

zyxelp660hn-t1a_v1Not specified—

zyxelp660hn-t1a_v1_firmwareNot specified—

zyxelp660hn-t1a_v2Not specified—

zyxelp660hn-t1a_v2_firmwareNot specified—

06 References

seclists.orghttps://seclists.org/fulldisclosure/2017/Jan/40x_refsource_MISC
ssd-disclosure.comhttps://ssd-disclosure.com/index.php/archives/2910x_refsource_MISC
unit42.paloaltonetworks.comhttps://unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-systems/x_refsource_MISC
raw.githubusercontent.comhttps://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txtx_refsource_MISC
www.zyxel.comhttp://www.zyxel.com/support/announcement_unauthenticated.shtmlx_refsource_MISC