CVE-2026-120228

CRITICAL 9.9

WAVLINK WN553X1-B ioos Service sub_416D88 os command injection

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

A flaw has been found in WAVLINK WN553X1-B V260403_2.0.0. This vulnerability affects the function sub_416D88 of the file /bin/ioos of the component ioos Service. Executing a manipulation of the argument group_id/group_name can lead to os command injection. The attack can be executed remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure.

CWE	CWE-78 CWE-77
Vendor	wavlink
Product	wn553x1-b
Published	Nov 1, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

WAVLINK / WN553X1-B

V260403_2.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/429587 vuldb.com: https://vuldb.com/vuln/429587/cti vuldb.com: https://vuldb.com/cve/CVE-2026-120228 vuldb.com: https://vuldb.com/submit/919151 github.com: https://github.com/senxitoyshuyi-ui/IOT-CVE/blob/main/vulns/WAVLINK%20WN553X1-B%20Router.md

Credits

🔍 shuyi (VulDB User) VulDB CNA Team