Summary
generated automatically from NVD dataCVE-2026-120240 affects the WAVLINK WN553X1-B firmware version V260403_2.0.0. The function sub_41A748 in /bin/ioos, part of the WireGuard CLI Group Handler component, mishandles the group_id and group_name arguments, which allows OS command injection (CWE-77). The attack can be launched remotely, and the exploit has been publicly disclosed. The vulnerability is rated CRITICAL with a CVSS v3.1 score of 9.9.
NVD 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.
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
Information
- Published
- 1 nov. 2026
- Updated
- 2 nov. 2026
- Status
- Deferred
- Source
- cna@vuldb.com
Weaknesses (CWE)
Similar CVEs
Other vulnerabilities of type CWE-77
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