CVE-2026-120240 Details
Description
A vulnerability was determined in WAVLINK WN553X1-B V260403_2.0.0. This issue affects the function sub_41A748 of the file /bin/ioos of the component WireGuard CLI Group Handler. Executing a manipulation of the argument group_id/group_name can lead to os command injection. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.
An authenticated OS command injection vulnerability has been identified in the WAVLINK WN553X1-B router, specifically in the WireGuard CLI Group Handler component. This issue arises in the V260403_2.0.0 firmware version, where user-controlled parameters are improperly validated before being passed to the system command execution function. As a result, an attacker with a valid session can inject arbitrary commands that are executed with root privileges on the device.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 1, 2026CISA-ADP
Assessed Nov 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK%20WN553X1-B%20Router/WAVLINK_WN553X1-B_wireguard_cli_group_command_injection.md | [email protected] | ExploitTechnical Description |
| https://vuldb.com/cve/CVE-2026-120240 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/919251 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/429599 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/429599/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| WAVLINK WN553X1-B | V260403_2.0.0 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 2, 2026 | CVE Modified | CISA-ADP |
| Nov 1, 2026 | New CVE Received | [email protected] |