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CVE-2026-120231

9.9, critical

WAVLINK WN553X1-B Command Injection Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
9.9, critical critical CVSS v3.1
EPSS, next 30 days
n/a
Exploitation
No public evidence
Published
1 Nov 2026yesterday

Description

A vulnerability was determined in WAVLINK WN553X1-B V260403_2.0.0. The affected element is the function sub_416568 of the file /bin/ioos of the component OpenVPN CLI Handler. This manipulation of the argument file_id causes os command injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.

Details

Vendor
WAVLINK
Product
WN553X1-B
Weakness
CWE-77 (opens in a new tab)
Status
Received
Updated
1 Nov 2026
Assigner
cna@vuldb.com

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

References 5

Other references 5

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other WAVLINK CVEs

Every WAVLINK CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-120276 WAVLINK WN536AX6-A Command Injection Vulnerability 10, critical
  • CVE-2026-120277 WAVLINK WN536AX6-A Command Injection Vulnerability 10, critical
  • CVE-2026-120279 WAVLINK WN536AX6-A Command Injection Vulnerability 10, critical
  • CVE-2026-120280 WAVLINK WN536AX6-A Command Injection Vulnerability 10, critical
  • CVE-2026-120281 WAVLINK WN536AX6-A Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability 10, critical
  • CVE-2026-120282 WAVLINK WN536AX6-A Command Injection Vulnerability 9.9, critical
  • CVE-2026-120195 WAVLINK WL-WN579A3-A Command Injection Vulnerability EPSS 2% 10, critical
  • CVE-2026-120196 WAVLINK WN579X3-D Command Injection Vulnerability EPSS 2% 9.9, critical

Beyond this page

Is CVE-2026-120231 in your network?

This page tells you how dangerous CVE-2026-120231 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 2 Nov 2026, not the live upstream state.