Vulnerability details
CVE-2026-120239
Wavlink WN553X1-B
WAVLINK WN553X1-B WireGuard CLI ioos sub_419DA8 os command injection
CVSS 4.0
9.4Critical
Official description
A vulnerability was found in WAVLINK WN553X1-B V260403_2.0.0. This vulnerability affects the function sub_419DA8 of the file /bin/ioos of the component WireGuard CLI Handler. Performing a manipulation of the argument file_id results in os command injection. The attack is possible to be carried out remotely. The exploit has been made public and could be used. 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/429598 vdb-entrytechnical-description
- https://vuldb.com/vuln/429598/cti signaturepermissions-required
- https://vuldb.com/cve/CVE-2026-120239 third-party-advisory
- https://vuldb.com/submit/919250 third-party-advisory
- https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK%20WN553X1-B%20Router/WAVLINK_WN553X1-B_wireguard_cli_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