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CVE-2017-18368

Known Exploited (CISA KEV)CRITICAL

9.8

CVSS Severity Score

EPSS Score25.9030%

EPSS Percentile85.52th

PublishedMay 2, 2019

Last ModifiedNov 5, 2025

Vulnerability 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 accessible by an unauthenticated user. The vulnerability is in the ViewLog.asp page and can be exploited through the remote_host parameter.

Affected Platforms (CPE)

💻

Billion

5200w T Firmware

= 7.3.8.0

💻

Zyxel

P660hn T1a V2 Firmware

= 7.3.15.0

💻

Zyxel

P660hn T1a V1 Firmware

= 7.3.15.0

References & Advisories

🔗 http://www.zyxel.com/support/announcement_unauthenticated.shtml

🔗 https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt

🔗 https://seclists.org/fulldisclosure/2017/Jan/40

🔗 https://ssd-disclosure.com/index.php/archives/2910

🔗 https://unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-systems/

🔗 http://www.zyxel.com/support/announcement_unauthenticated.shtml

🔗 https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt

🔗 https://seclists.org/fulldisclosure/2017/Jan/40

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