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CVE-2026-120239

CRITICAL
9.9NVD

Summary

generated automatically from NVD data

WAVLINK WN553X1-B version V260403_2.0.0 contains an OS command injection flaw in the function sub_419DA8 of /bin/ioos, part of the WireGuard CLI Handler component. Manipulating the file_id argument lets an attacker inject commands, and the attack can be launched remotely. The NVD description notes that a public exploit exists, and the issue is rated CRITICAL with a CVSS v3.1 score of 9.9.

NVD description

A vulnerability was found in WAVLINK WN553X1-B V260403_2.0.0. This vulnerability affects the function sub_419DA8 of the file /bin/ioos of the component WireGuard CLI Handler. Performing a manipulation of the argument file_id results in os command injection. The attack is possible to be carried out remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure.

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EPSS · FIRST.org

1.7%probability of exploitation in the next 30 days

Higher than 77% of scored CVEs

EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-11-02, recomputed daily by FIRST.org.

In-depth analysis on cveo.tech

This CVE is covered in an article: context, affected versions and published fixes.

CVSS v3.1 Score

9.9
/ 10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Information

Published
1 nov. 2026
Updated
2 nov. 2026
Status
Deferred
Source
cna@vuldb.com

Weaknesses (CWE)

CWE-77CWE-78

Similar CVEs

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