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CVE-2017-18368

97
FAUCET Score

CVE-2017-18368 is a critical command injection vulnerability affecting ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 routers, specifically in the Remote System Log forwarding function accessible via the ViewLog.asp page. This unauthenticated flaw allows remote attackers to execute arbitrary commands with a CVSS score of 9.8 (CRITICAL), indicating high impact on confidentiality, integrity, and availability. The vulnerability is actively exploited in the wild, with public exploit modules available and significant community discussion, including observations of widespread exploitation attempts by various botnets like Gafgyt and EnemyBot.

Impacted Technologies

VendorProductVersion(s)CPE
7.3.8.0CPE matchmatch criteria
cpe:2.3:o:billion:5200w-t_firmware:7.3.8.0:*:*:*:*:*:*:*
7.3.15.0CPE matchmatch criteria
cpe:2.3:o:zyxel:p660hn-t1a_v2_firmware:7.3.15.0:*:*:*:*:*:*:*
7.3.15.0CPE matchmatch criteria
cpe:2.3:o:zyxel:p660hn-t1a_v1_firmware:7.3.15.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
94.51%
Probability of exploitation in next 30 days
EPSS Percentile
99.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Aug 7, 2023
Metasploit: TrueOnline / ZyXEL P660HN-T v1 Router Unauthenticated Command Injection · Dec 26, 2016
This CVE's current EPSS score of 0.9451 is in the 99th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
raw.githubusercontent.com / pedrib/PoC/master/advisories/zyxel_trueonline.txt
ExploitThird Party Advisory
seclists.org / fulldisclosure/2017/Jan/40
ExploitMailing ListThird Party Advisory
ssd-disclosure.com / index.php/archives/2910
ExploitTechnical DescriptionThird Party Advisory
unit42.paloaltonetworks.com / new-mirai-variant-targets-enterprise-wireless-presentation-display-systems
Technical DescriptionThird Party Advisory
zyxel.com / support/announcement_unauthenticated.shtml
Broken Link