Vulnerability details
CVE-2026-120240
Wavlink WN553X1-B
WAVLINK WN553X1-B WireGuard CLI Group ioos sub_41A748 os command injection
CVSS 4.0
9.4Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.4Critical | 4.0 | CVEProject cvelistV5 (CNA) (VulDB) | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P |
| 9.9Critical | 3.1 | CVEProject cvelistV5 (CNA) (VulDB) | 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 |
| 9.9Critical | 3.0 | CVEProject cvelistV5 (CNA) (VulDB) | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R |
| 9.0High | 2.0 | CVEProject cvelistV5 (CNA) (VulDB) | AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Wavlink | WN553X1-B | V260403_2.0.0 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://vuldb.com/vuln/429599 vdb-entrytechnical-description
- https://vuldb.com/vuln/429599/cti signaturepermissions-required
- https://vuldb.com/cve/CVE-2026-120240 third-party-advisory
- https://vuldb.com/submit/919251 third-party-advisory
- https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK%20WN553X1-B%20Router/WAVLINK_WN553X1-B_wireguard_cli_group_command_injection.md exploit
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Details
- Published
- 2026-11-01
- Last updated
- 2026-11-02
- State
- Published
- Assigner (CNA)
- VulDB
- Kolun priority
- 43 · Medium
Exploit prediction (EPSS)
1.68%
Probability of exploitation in 30 days
77.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-78OS Command Injection
- CWE-77Command Injection