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…
- 9.8CriticalCVSS base score
- 94.5%Exploitation in 30 daysEPSS · top 0.1% of all CVEs
- YesKnown exploitedin CISA's KEV since 7 Aug 2023
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Zyxel P660HN-T1A Routers Command Injection Vulnerability.
- Added
- 7 Aug 2023
- Fix due (US federal)
- 28 Aug 2023
- Used by ransomware
- Not known
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 7 Aug 2023.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module for it. CISA's SSVC rates its exploitation: it is being exploited.
Show the exploits1
Metasploit modules1 module
- TrueOnline / ZyXEL P660HN-T v1 Router Unauthenticated Command Injection (Metasploit module) (opens in a new tab)
exploit/linux/http/trueonline_p660hn_v1_rceRank excellentdisclosed 26 Dec 2016
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
Published
- 4 years later
· 4 years later
Added to CISA KEV
Known exploited in the wild
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 94.5% · top 0.1% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
n/a
- affected n/a
References
6
- https://seclists.org/fulldisclosure/2017/Jan/40 (opens in a new tab)x_refsource_MISCx_transferred
- https://ssd-disclosure.com/index.php/archives/2910 (opens in a new tab)x_refsource_MISCx_transferred
- https://unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-systems/ (opens in a new tab)x_refsource_MISCx_transferred
- https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt (opens in a new tab)x_refsource_MISCx_transferred
- http://www.zyxel.com/support/announcement_unauthenticated.shtml (opens in a new tab)x_refsource_MISCx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-18368 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2017-9484 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-18368)Record last updated .