HOMEVULNERABILITIESCVE-2017-18369
CRITICAL

CVE-2017-18369

CWE-78Published: May 2, 2019· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

The Billion 5200W-T 1.02b.rc5.dt49 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 adv_remotelog.asp page and can be exploited through the syslogServerAddr parameter.

NVD Source

Technical Analysis

CVE-2017-18369 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

billion2 product(s)
5200w-t firmware5200w-t
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt
ADVISORYhttps://seclists.org/fulldisclosure/2017/Jan/40
ADVISORYhttps://ssd-disclosure.com/index.php/archives/2910
ADVISORYhttps://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt
ADVISORYhttps://seclists.org/fulldisclosure/2017/Jan/40
ADVISORYhttps://ssd-disclosure.com/index.php/archives/2910

All References (6)

→
https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txtExploit · Third Party Advisory
→
https://seclists.org/fulldisclosure/2017/Jan/40Exploit · Mailing List · Third Party Advisory
→
https://ssd-disclosure.com/index.php/archives/2910Exploit · Technical Description · Third Party Advisory
→
https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txtExploit · Third Party Advisory
→
https://seclists.org/fulldisclosure/2017/Jan/40Exploit · Mailing List · Third Party Advisory
→
https://ssd-disclosure.com/index.php/archives/2910Exploit · Technical Description · Third Party Advisory

Quick Facts

CVE IDCVE-2017-18369
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-78
CISA KEVNo
Affected1 vendor(s)
PublishedMay 2, 2019

Related CVEs (CWE-78)

CVE-2021-47667
10.0
CVE-2025-34073
10.0
CVE-2026-8985
10.0
CVE-2025-34112
10.0
CVE-2025-3499
10.0
CVE-2025-2071
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-18369 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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