CVE-2017-18368The 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 access…
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It affects billion 5200w-t_firmware and 2 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Aug 7, 2023; federal agencies had to remediate by Aug 28, 2023. Treat that date as your deadline.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-78
- Known exploited
- Added to CISA KEV Aug 7, 2023; federal remediation due Aug 28, 2023Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 94.42% (percentile 100)
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
billion 5200w-t_firmware billion:5200w-t_firmware | 7.3.8.0 | NVD |
zyxel p660hn-t1a_v2_firmware zyxel:p660hn-t1a_v2_firmware | 7.3.15.0 | NVD |
zyxel p660hn-t1a_v1_firmware zyxel:p660hn-t1a_v1_firmware | 7.3.15.0 | NVD |
References
- https://seclists.org/fulldisclosure/2017/Jan/40x-refsource-misc, exploit, mailing-list, third-party-advisory
- https://ssd-disclosure.com/index.php/archives/2910x-refsource-misc, exploit, technical-description, third-party-advisory
- https://unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-systems/x-refsource-misc, technical-description, third-party-advisory
- https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txtx-refsource-misc, exploit, third-party-advisory
- http://www.zyxel.com/support/announcement_unauthenticated.shtmlx-refsource-misc, broken-link
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-18368us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.