CVE-2017-18368 (GCVE-0-2017-18368)

Vulnerability from cvelistv5 – Published: 2019-05-02 16:14 – Updated: 2025-10-21 23:45
VLAI CISA Shadowserver KEVIntel
Summary
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.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • n/a
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 267db17c-b616-48fb-a9f9-141cde0d684b

Vulnerability ID: CVE-2017-18368

Status: Confirmed

Status Updated: 2023-08-07 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2023-08-07
Asserted: 2023-08-07
Scope
Notes: KEV entry: Zyxel P660HN-T1A Routers Command Injection Vulnerability | Affected: Zyxel / P660HN-T1A Routers | Description: Zyxel P660HN-T1A routers contain a command injection vulnerability in the Remote System Log forwarding function, which is accessible by an unauthenticated user and exploited via the remote_host parameter of the ViewLog.asp page. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2023-08-28 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-a-new-variant-of-gafgyt-malware; https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-vulnerability-in-p660hn-t1a-dsl-cpe; https://nvd.nist.gov/vuln/detail/CVE-2017-18368
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-78
Feed CISA Known Exploited Vulnerabilities Catalog
Product P660HN-T1A Routers
Due Date 2023-08-28
Date Added 2023-08-07
Vendorproject Zyxel
Vulnerabilityname Zyxel P660HN-T1A Routers Command Injection Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 13:24 UTC | Updated: 2026-02-06 07:53 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 1fb02370-7e47-430c-9eaa-edfd41bc9469

Vulnerability ID: CVE-2017-18368

Status: Confirmed

Status Updated: 2025-02-16 00:00 UTC

Exploited: Yes

Characteristics
Severity: 98.0
Timestamps
First Seen: 2023-10-13
Asserted: 2023-10-13
Last Seen: 2025-02-16
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Zyxel/Billion / ZyXEL P660HN-T1A v1, ZyXEL P660HN-T1A v2, Billion 5200W-T | Class: router | Severity: Critical (CVSS 9.8) | IoT: yes | In CISA KEV: yes | Honeypot connections on 2025-02-16: 2152
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 216
Iot yes
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class router
7D Avg 45
Vendor Zyxel/Billion
30D Avg 23
90D Avg 26
Product ZyXEL P660HN-T1A v1, ZyXEL P660HN-T1A v2, Billion 5200W-T
Cisa Kev yes
Connections 2152
Observation Date 2025-02-16
Vulnerability Class CVSS
Vulnerability Score 9.8
Vulnerability Severity Critical
References
Created: 2026-07-01 05:53 UTC | Updated: 2026-07-01 13:14 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 78999b30-4e8c-453f-b846-3955d4a73e4c

Vulnerability ID: CVE-2017-18368

Status: Confirmed

Status Updated: 2023-08-07 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2023-08-07
Asserted: 2023-08-07
Scope
Notes: KEVIntel entry: 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... | Affected: ZyXEL / P660HN-T1A v1 TCLinux Fw | CVSS: 9.8 (CRITICAL) | EPSS: 0.94508 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title 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...
Vendor ZyXEL
Product P660HN-T1A v1 TCLinux Fw
Added Date 2023-08-07T00:00:00.000Z
Cvss Score 9.8
Epss Score 0.94508
Cvss Severity CRITICAL
Epss Percentile 0.99843
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 11:14 UTC | Updated: 2026-06-23 11:14 UTC
Show details on NVD website
To clipboard 

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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.