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…
Browse: All 2017 CVEs · All vendors
- CVSS score
- 9.8 Critical
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- CISA KEV
- Yes — actively exploited (added 2023-08-07, remediation due 2023-08-28)
- Weakness (CWE)
- CWE-78
- Published
- 2019-05-02
- Last modified
- 2026-06-17
- NVD status
- Analyzed
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 products
- billion 5200w-t firmware
- zyxel p660hn-t1a v2 firmware
- zyxel p660hn-t1a v1 firmware
Affected ranges per NVD CPE data; confirm exact versions in the vendor advisory.
Required action (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Federal remediation deadline: 2023-08-28.
How to prioritize this
This vulnerability is on the CISA KEV list, meaning it is being actively exploited — treat it as urgent regardless of the raw CVSS number. Use the live CVE lookup for the latest NVD data, and the CVSS 3.1 calculator to model your own environmental score.
References
- 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/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-18368
FAQ
Is CVE-2017-18368 actively exploited?
Yes. CISA added CVE-2017-18368 to its Known Exploited Vulnerabilities (KEV) catalog on 2023-08-07, with a federal remediation deadline of 2023-08-28. A KEV listing means real-world exploitation is confirmed, so patching this should be prioritized above many higher-CVSS bugs that aren't being exploited.
What is the CVSS score of CVE-2017-18368?
CVE-2017-18368 has a CVSS base score of 9.8 (Critical). Its vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Related vulnerabilities
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- CVE-2024-11667 — Zyxel Multiple Firewalls
- CVE-2017-6884 — Zyxel EMG2926 Routers
- CVE-2023-27992 — Zyxel Multiple Network-Attached Storage (N
- CVE-2023-33009 — Zyxel Multiple Firewalls
Data source: NVD & CISA KEV. Shown as-is; nothing added. Last generated from NVD data — re-check the live tool for updates.
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