CVE-2026-120231

CRITICAL 9.9

WAVLINK WN553X1-B OpenVPN CLI ioos sub_416568 os command injection

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

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.

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/429590 vuldb.com: https://vuldb.com/vuln/429590/cti vuldb.com: https://vuldb.com/cve/CVE-2026-120231 vuldb.com: https://vuldb.com/submit/919247 github.com: https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK%20WN553X1-B%20Router/WAVLINK_WN553X1-B_openvpn_cli_command_injection.md

Credits

🔍 shuyi (VulDB User) VulDB CNA Team