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Vulnerability record · CVE-2018-25125 · published 14 November 2025

CVE-2018-25125: Classic buffer overflow vulnerability

Netis ADSL Router DL4322D firmware RTK 2.1.1 contains a buffer overflow vulnerability in the embedded FTP service that allows an authenticated remote user to trigger a denial of service. After logging in to the FTP service, sending an FTP command such as ABOR with an excessively long argument causes the service, and in practice the router, to crash or become unresponsive, resulting in a loss of availability for the device and connected users.

8.7 CVSS 4.0 High EPSS 0.49% · top 60.6% CWE-120 · Classic buffer overflow Deferred
8.7CVSS 4.0 base score
0.49%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Netis ADSL Router DL4322D firmware RTK 2.1.1 contains a buffer overflow vulnerability in the embedded FTP service that allows an authenticated remote user to trigger a denial of service. After logging in to the FTP service, sending an FTP command such as ABOR with an excessively long argument causes the service, and in practice the router, to crash or become unresponsive, resulting in a loss of availability for the device and connected users.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://web.archive.org/web/20180731191918/http://www.netis-systems.com/Home/detail/id/74.html
https://www.exploit-db.com/exploits/45424
https://www.netis-systems.com/
https://www.vulncheck.com/advisories/netis-dl4322d-ftp-service-dos

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Source: NIST National Vulnerability Database (record CVE-2018-25125), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.