Which products and versions are affected by CVE-2017-18369?

Affected: 5200w-T Firmware (Billion) versions 1.02b-rc5.dt49. The full list is in the CVE brief.

Is CVE-2017-18369 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed since Oct 9, 2025.

Is CVE-2017-18369 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2017-18369?

Public exploit code is available.

Is there a fix for CVE-2017-18369?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2017-18369 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2017-18369

CriticalExploitedPublic exploit

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.

Published May 2, 2019 · Updated Nov 21, 2024

Key Facts

Patch immediately

CVE-2017-18369 is a critical-severity vulnerability (CVSS 9.8 v3) affecting 5200w-T Firmware (Billion).
It is exploited in the wild, listed in Industry KEV feed since Oct 9, 2025. Public exploit code is available.
EPSS estimates a 68% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3

9.8

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

68%

Higher than 99.3% of all scored CVEs

Exploited in the wild

Yes

1 catalog listing

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2017-18369 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Oct 9, 2025	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
5200w-T FirmwareBillion	1.02b-rc5.dt49	n/a

Timeline

Publicly disclosed
May 2, 2019
Last updated
Nov 21, 2024
Added to Industry KEV feed
Oct 9, 2025

Weakness Type

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

1 more references in the full CVE brief

FAQ

Common Questions.

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.
Affected: 5200w-T Firmware (Billion) versions 1.02b-rc5.dt49. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Oct 9, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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