01 Record

CVE-2017-18368

The ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 router distributed by TrueOnline has a command injection vulnerability in the Remote System Log forwarding function, which is

CriticalKEVPUBLISHEDCNA: mitre

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 a command injection vulnerability in the Remote System Log forwarding function, which is

03 Exploitation and scoring

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2023-08-07. Federal remediation due 2023-08-28.

SSVC decision

ExploitationactiveCISA reports credible evidence of active exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

94.50% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 99.8% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. 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 16:14Z7 YR AGO

Last updated

2025-10-21 23:45Z1 YR AGO

Reserved

2019-05-02

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base

Data version

5.1

Document digest

876add853561441de0fe156f5c14f728e288dc73285d18a98e1727f82656823c

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
www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-18368government-resource