CVE-2017-18368

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-08-07), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 95%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS
99.8%
KEV
⚠ Exploited

Published

May 2, 2019

Last Modified

November 5, 2025

Advisory Details (5)

Auto-updated Jun 1, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

New Mirai Variant Targets Enterprise Wireless Presentation & Display Systems

https://unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-systems/
generic🟡 PoC Available

SSD Advisory - ZyXEL / Billion Multiple Vulnerabilities - SSD Secure Disclosure

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

Full Disclosure: Multiple RCE in ZyXEL / Billion / TrueOnline routers

https://seclists.org/fulldisclosure/2017/Jan/40
generic
https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt
generic

Support Download Page Redirect

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

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 48× in last 7d / 196× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 354 total refreshes for this CVE.

  1. 2026-07-23 01:28 UTCEG score recompute
  2. 2026-07-22 21:45 UTCEG score recompute
  3. 2026-07-22 21:45 UTCGHSA enrichment
  4. 2026-07-22 19:40 UTCCISA KEV update
  5. 2026-07-22 17:26 UTCEG score recompute
  6. 2026-07-22 17:26 UTCGHSA enrichment
  7. 2026-07-22 14:04 UTCEPSS rescore
  8. 2026-07-22 14:04 UTCEPSS rescore
  9. 2026-07-22 13:11 UTCGHSA enrichment
  10. 2026-07-22 08:58 UTCGHSA enrichment
  11. 2026-07-22 04:45 UTCGHSA enrichment
  12. 2026-07-22 00:31 UTCGHSA enrichment
  13. 2026-07-21 18:57 UTCGHSA enrichment
  14. 2026-07-21 14:43 UTCGHSA enrichment
  15. 2026-07-21 14:37 UTCCISA KEV update
  16. 2026-07-21 10:30 UTCGHSA enrichment
  17. 2026-07-21 06:16 UTCGHSA enrichment
  18. 2026-07-21 02:04 UTCGHSA enrichment
  19. 2026-07-20 21:50 UTCGHSA enrichment
  20. 2026-07-20 17:37 UTCGHSA enrichment
  21. 2026-07-20 13:24 UTCGHSA enrichment
  22. 2026-07-20 09:11 UTCGHSA enrichment
  23. 2026-07-20 04:58 UTCGHSA enrichment
  24. 2026-07-20 00:45 UTCGHSA enrichment
  25. 2026-07-19 20:32 UTCGHSA enrichment
Show 75 more
  1. 2026-07-19 16:19 UTCGHSA enrichment
  2. 2026-07-19 12:05 UTCGHSA enrichment
  3. 2026-07-19 07:53 UTCGHSA enrichment
  4. 2026-07-19 03:39 UTCGHSA enrichment
  5. 2026-07-18 23:26 UTCGHSA enrichment
  6. 2026-07-18 19:13 UTCGHSA enrichment
  7. 2026-07-18 14:58 UTCGHSA enrichment
  8. 2026-07-18 10:44 UTCGHSA enrichment
  9. 2026-07-18 06:31 UTCGHSA enrichment
  10. 2026-07-18 02:18 UTCGHSA enrichment
  11. 2026-07-17 22:05 UTCGHSA enrichment
  12. 2026-07-17 17:51 UTCGHSA enrichment
  13. 2026-07-17 13:38 UTCGHSA enrichment
  14. 2026-07-17 09:25 UTCEG score recompute
  15. 2026-07-17 09:25 UTCGHSA enrichment
  16. 2026-07-17 05:12 UTCGHSA enrichment
  17. 2026-07-17 00:59 UTCGHSA enrichment
  18. 2026-07-16 20:46 UTCGHSA enrichment
  19. 2026-07-16 17:04 UTCCISA KEV update
  20. 2026-07-16 16:59 UTCEPSS rescore
  21. 2026-07-16 16:59 UTCEPSS rescore
  22. 2026-07-16 16:33 UTCGHSA enrichment
  23. 2026-07-16 12:14 UTCGHSA enrichment
  24. 2026-07-16 08:01 UTCGHSA enrichment
  25. 2026-07-16 03:48 UTCGHSA enrichment
  26. 2026-07-15 23:35 UTCGHSA enrichment
  27. 2026-07-15 19:22 UTCGHSA enrichment
  28. 2026-07-15 16:49 UTCCISA KEV update
  29. 2026-07-15 15:09 UTCGHSA enrichment
  30. 2026-07-15 15:04 UTCCISA KEV update
  31. 2026-07-15 10:56 UTCGHSA enrichment
  32. 2026-07-15 06:42 UTCGHSA enrichment
  33. 2026-07-15 02:29 UTCGHSA enrichment
  34. 2026-07-14 22:16 UTCGHSA enrichment
  35. 2026-07-14 18:05 UTCCISA KEV update
  36. 2026-07-14 18:03 UTCGHSA enrichment
  37. 2026-07-14 13:50 UTCGHSA enrichment
  38. 2026-07-14 09:37 UTCGHSA enrichment
  39. 2026-07-14 05:24 UTCGHSA enrichment
  40. 2026-07-14 01:11 UTCGHSA enrichment
  41. 2026-07-13 20:58 UTCGHSA enrichment
  42. 2026-07-13 17:07 UTCCISA KEV update
  43. 2026-07-13 16:44 UTCGHSA enrichment
  44. 2026-07-13 12:31 UTCGHSA enrichment
  45. 2026-07-13 08:17 UTCGHSA enrichment
  46. 2026-07-13 04:02 UTCGHSA enrichment
  47. 2026-07-12 23:48 UTCGHSA enrichment
  48. 2026-07-12 19:35 UTCGHSA enrichment
  49. 2026-07-12 15:21 UTCGHSA enrichment
  50. 2026-07-12 11:07 UTCGHSA enrichment
  51. 2026-07-12 06:54 UTCGHSA enrichment
  52. 2026-07-12 02:41 UTCGHSA enrichment
  53. 2026-07-11 22:28 UTCGHSA enrichment
  54. 2026-07-11 18:14 UTCGHSA enrichment
  55. 2026-07-11 14:02 UTCGHSA enrichment
  56. 2026-07-11 09:47 UTCGHSA enrichment
  57. 2026-07-11 08:24 UTCEPSS rescore
  58. 2026-07-11 05:34 UTCGHSA enrichment
  59. 2026-07-11 01:20 UTCGHSA enrichment
  60. 2026-07-10 21:07 UTCGHSA enrichment
  61. 2026-07-10 17:52 UTCCISA KEV update
  62. 2026-07-10 16:54 UTCGHSA enrichment
  63. 2026-07-10 12:41 UTCGHSA enrichment
  64. 2026-07-10 08:27 UTCGHSA enrichment
  65. 2026-07-10 04:14 UTCGHSA enrichment
  66. 2026-07-09 23:59 UTCGHSA enrichment
  67. 2026-07-09 19:46 UTCGHSA enrichment
  68. 2026-07-09 15:32 UTCGHSA enrichment
  69. 2026-07-09 11:15 UTCGHSA enrichment
  70. 2026-07-09 07:01 UTCGHSA enrichment
  71. 2026-07-09 02:47 UTCGHSA enrichment
  72. 2026-07-08 22:34 UTCGHSA enrichment
  73. 2026-07-08 18:21 UTCGHSA enrichment
  74. 2026-07-08 14:08 UTCGHSA enrichment
  75. 2026-07-08 09:53 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitexploit/linux/http/trueonline_p660hn_v1_rce✓ verified
    First seen Dec 26, 2016

    TrueOnline / ZyXEL P660HN-T v1 Router Unauthenticated Command Injection

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2017-18368?
CVE-2017-18368 is a critical vulnerability published on May 2, 2019. 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…
When was CVE-2017-18368 disclosed?
CVE-2017-18368 was first published in the National Vulnerability Database on May 2, 2019, with the most recent update on November 5, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-18368 actively exploited?
Yes. CISA added CVE-2017-18368 to the Known Exploited Vulnerabilities catalog on August 7, 2023, affecting Zyxel P660HN-T1A Routers. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2017-18368?
CVE-2017-18368 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2017-18368?
CVE-2017-18368 affects Zyxel P660HN-T1A Routers. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2017-18368?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-18368, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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